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Restored the previous new API. I'm going to change it so that events are callbacks rather than using a window handler, but other than that... yeah.

This commit is contained in:
Pietro Gagliardi 2014-06-30 22:48:12 -04:00
parent 990d50e9a1
commit ffa1bbe0b9
35 changed files with 849 additions and 1287 deletions
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11
area.go
View File

@ -6,7 +6,6 @@ import (
"fmt"
"image"
"reflect"
"sync"
"unsafe"
)
@ -28,7 +27,6 @@ import (
// to lead to trouble.
// [FOR FUTURE PLANNING Use TextArea instead, providing a TextAreaHandler.]
type Area struct {
lock sync.Mutex
created bool
sysData *sysData
handler AreaHandler
@ -298,9 +296,6 @@ func NewArea(width int, height int, handler AreaHandler) *Area {
// SetSize will also signal the entirety of the Area to be redrawn as in RepaintAll.
// It panics if width or height is zero or negative.
func (a *Area) SetSize(width int, height int) {
a.lock.Lock()
defer a.lock.Unlock()
checkAreaSize(width, height, "Area.SetSize()")
if a.created {
a.sysData.setAreaSize(width, height)
@ -313,9 +308,6 @@ func (a *Area) SetSize(width int, height int) {
// RepaintAll signals the entirety of the Area for redraw.
// If called before the Window containing the Area is created, RepaintAll does nothing.
func (a *Area) RepaintAll() {
a.lock.Lock()
defer a.lock.Unlock()
if !a.created {
return
}
@ -323,9 +315,6 @@ func (a *Area) RepaintAll() {
}
func (a *Area) make(window *sysData) error {
a.lock.Lock()
defer a.lock.Unlock()
a.sysData.handler = a.handler
err := a.sysData.make(window)
if err != nil {

24
button.go
View File

@ -2,18 +2,8 @@
package ui
import (
"sync"
)
// A Button represents a clickable button with some text.
type Button struct {
// Clicked gets a message when the button is clicked.
// You cannot change it once the Window containing the Button has been created.
// If you do not respond to this signal, nothing will happen.
Clicked chan struct{}
lock sync.Mutex
created bool
sysData *sysData
initText string
@ -24,15 +14,11 @@ func NewButton(text string) (b *Button) {
return &Button{
sysData: mksysdata(c_button),
initText: text,
Clicked: newEvent(),
}
}
// SetText sets the button's text.
func (b *Button) SetText(text string) {
b.lock.Lock()
defer b.lock.Unlock()
if b.created {
b.sysData.setText(text)
return
@ -42,9 +28,6 @@ func (b *Button) SetText(text string) {
// Text returns the button's text.
func (b *Button) Text() string {
b.lock.Lock()
defer b.lock.Unlock()
if b.created {
return b.sysData.text()
}
@ -52,10 +35,9 @@ func (b *Button) Text() string {
}
func (b *Button) make(window *sysData) error {
b.lock.Lock()
defer b.lock.Unlock()
b.sysData.event = b.Clicked
b.sysData.event = func() {
window.winhandler.Event(Clicked, b)
}
err := b.sysData.make(window)
if err != nil {
return err

7
callbacks_unix.go
View File

@ -27,8 +27,9 @@ import "C"
func our_window_delete_event_callback(widget *C.GtkWidget, event *C.GdkEvent, what C.gpointer) C.gboolean {
// called when the user tries to close the window
s := (*sysData)(unsafe.Pointer(what))
s.signal()
return C.TRUE // do not close the window
b := false // TODO
s.close(&b)
return togbool(!b) // ! because TRUE means don't close
}
var window_delete_event_callback = C.GCallback(C.our_window_delete_event_callback)
@ -52,7 +53,7 @@ var window_configure_event_callback = C.GCallback(C.our_window_configure_event_c
func our_button_clicked_callback(button *C.GtkButton, what C.gpointer) {
// called when the user clicks a button
s := (*sysData)(unsafe.Pointer(what))
s.signal()
s.event()
}
var button_clicked_callback = C.GCallback(C.our_button_clicked_callback)

20
checkbox.go
View File

@ -2,13 +2,8 @@
package ui
import (
"sync"
)
// A Checkbox is a clickable square with a label. The square can be either checked or unchecked. Checkboxes start out unchecked.
type Checkbox struct {
lock sync.Mutex
created bool
sysData *sysData
initText string
@ -25,9 +20,6 @@ func NewCheckbox(text string) (c *Checkbox) {
// SetText sets the checkbox's text.
func (c *Checkbox) SetText(text string) {
c.lock.Lock()
defer c.lock.Unlock()
if c.created {
c.sysData.setText(text)
return
@ -37,9 +29,6 @@ func (c *Checkbox) SetText(text string) {
// Text returns the checkbox's text.
func (c *Checkbox) Text() string {
c.lock.Lock()
defer c.lock.Unlock()
if c.created {
return c.sysData.text()
}
@ -48,9 +37,6 @@ func (c *Checkbox) Text() string {
// SetChecked() changes the checked state of the Checkbox.
func (c *Checkbox) SetChecked(checked bool) {
c.lock.Lock()
defer c.lock.Unlock()
if c.created {
c.sysData.setChecked(checked)
return
@ -60,9 +46,6 @@ func (c *Checkbox) SetChecked(checked bool) {
// Checked() returns whether or not the Checkbox has been checked.
func (c *Checkbox) Checked() bool {
c.lock.Lock()
defer c.lock.Unlock()
if c.created {
return c.sysData.isChecked()
}
@ -70,9 +53,6 @@ func (c *Checkbox) Checked() bool {
}
func (c *Checkbox) make(window *sysData) error {
c.lock.Lock()
defer c.lock.Unlock()
err := c.sysData.make(window)
if err != nil {
return err

23
combobox.go
View File

@ -4,12 +4,10 @@ package ui
import (
"fmt"
"sync"
)
// A Combobox is a drop-down list of items, of which at most one can be selected at any given time. You may optionally make the combobox editable to allow custom items. Initially, no item will be selected (and no text entered in an editable Combobox's entry field). What happens to the text shown in a Combobox if its width is too small is implementation-defined.
type Combobox struct {
lock sync.Mutex
created bool
sysData *sysData
initItems []string
@ -37,9 +35,6 @@ func NewEditableCombobox(items ...string) *Combobox {
// Append adds items to the end of the Combobox's list.
// Append will panic if something goes wrong on platforms that do not abort themselves.
func (c *Combobox) Append(what ...string) {
c.lock.Lock()
defer c.lock.Unlock()
if c.created {
for _, s := range what {
c.sysData.append(s)
@ -52,9 +47,6 @@ func (c *Combobox) Append(what ...string) {
// InsertBefore inserts a new item in the Combobox before the item at the given position. It panics if the given index is out of bounds.
// InsertBefore will also panic if something goes wrong on platforms that do not abort themselves.
func (c *Combobox) InsertBefore(what string, before int) {
c.lock.Lock()
defer c.lock.Unlock()
var m []string
if c.created {
@ -78,9 +70,6 @@ badrange:
// Delete removes the given item from the Combobox. It panics if the given index is out of bounds.
func (c *Combobox) Delete(index int) {
c.lock.Lock()
defer c.lock.Unlock()
if c.created {
if index < 0 || index >= c.sysData.len() {
goto badrange
@ -99,9 +88,6 @@ badrange:
// Selection returns the current selection.
func (c *Combobox) Selection() string {
c.lock.Lock()
defer c.lock.Unlock()
if c.created {
return c.sysData.text()
}
@ -110,9 +96,6 @@ func (c *Combobox) Selection() string {
// SelectedIndex returns the index of the current selection in the Combobox. It returns -1 either if no selection was made or if text was manually entered in an editable Combobox.
func (c *Combobox) SelectedIndex() int {
c.lock.Lock()
defer c.lock.Unlock()
if c.created {
return c.sysData.selectedIndex()
}
@ -123,9 +106,6 @@ func (c *Combobox) SelectedIndex() int {
//
// On platforms for which this function may return an error, it panics if one is returned.
func (c *Combobox) Len() int {
c.lock.Lock()
defer c.lock.Unlock()
if c.created {
return c.sysData.len()
}
@ -133,9 +113,6 @@ func (c *Combobox) Len() int {
}
func (c *Combobox) make(window *sysData) (err error) {
c.lock.Lock()
defer c.lock.Unlock()
err = c.sysData.make(window)
if err != nil {
return err

1
controlsize_windows.go
View File

@ -175,7 +175,6 @@ func releaseTextDC(hwnd _HWND, dc _HANDLE) {
}
}
// This function runs on uitask; call the functions directly.
func (s *sysData) preferredSize(d *sysSizeData) (width int, height int) {
// the preferred size of an Area is its size
if stdDlgSizes[s.ctype].area {

16
delegate_darwin.go
View File

@ -24,9 +24,11 @@ func makeAppDelegate() {
}
//export appDelegate_windowShouldClose
func appDelegate_windowShouldClose(win C.id) {
func appDelegate_windowShouldClose(win C.id) C.BOOL {
sysData := getSysData(win)
sysData.signal()
b := false // TODO
sysData.close(&b)
return toBOOL(b)
}
//export appDelegate_windowDidResize
@ -42,13 +44,5 @@ func appDelegate_windowDidResize(win C.id) {
//export appDelegate_buttonClicked
func appDelegate_buttonClicked(button C.id) {
sysData := getSysData(button)
sysData.signal()
}
//export appDelegate_applicationShouldTerminate
func appDelegate_applicationShouldTerminate() {
// asynchronous so as to return control to the event loop
go func() {
AppQuit <- struct{}{}
}()
sysData.event()
}

25
delegateuitask_darwin.m
View File

@ -63,8 +63,7 @@ extern NSRect dummyRect;
- (BOOL)windowShouldClose:(id)win
{
appDelegate_windowShouldClose(win);
return NO; // don't close
return appDelegate_windowShouldClose(win);
}
- (void)windowDidResize:(NSNotification *)n
@ -79,13 +78,25 @@ extern NSRect dummyRect;
- (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)app
{
appDelegate_applicationShouldTerminate();
return NSTerminateCancel;
NSArray *windows;
NSUInteger i;
// try to close all windows
windows = [NSApp windows];
for (i = 0; i < [windows count]; i++)
[[windows objectAtIndex:i] performClose:self];
// if any windows are left, cancel
if ([[NSApp windows] count] != 0)
return NSTerminateCancel;
// no windows are left; we're good
return NSTerminateNow;
}
- (void)alertDidEnd:(NSAlert *)alert returnCode:(NSInteger)returnCode contextInfo:(void *)chan
- (void)alertDidEnd:(NSAlert *)alert returnCode:(NSInteger)returnCode contextInfo:(void *)data
{
dialog_send(chan, (uintptr_t) returnCode);
NSInteger *ret = (NSInteger *) data;
*ret = returnCode;
}
@end
@ -127,7 +138,7 @@ void douitask(id appDelegate, void *p)
fp = [NSValue valueWithPointer:p];
[appDelegate performSelectorOnMainThread:@selector(uitask:)
withObject:fp
waitUntilDone:YES]; // wait since that's what we want the Go uitask() to do
waitUntilDone:YES]; // wait so we can properly drain the autorelease pool; on other platforms we wind up waiting anyway (since the main thread can only handle one thing at a time) so
[pool release];
}

22
dialog.go
View File

@ -2,8 +2,16 @@
package ui
// Response denotes a response from the user to a Dialog.
type Response uint
const (
NotDone Response = iota
OK
)
// sentinel (not nil so programmer errors don't go undetected)
// this window is invalid and cannot be used directly
// notice the support it uses
var dialogWindow = new(Window)
// MsgBox displays an informational message box to the user with just an OK button.
@ -14,16 +22,16 @@ var dialogWindow = new(Window)
//
// See "On Dialogs" in the package overview for behavioral information.
func MsgBox(primaryText string, secondaryText string) {
<-dialogWindow.msgBox(primaryText, secondaryText)
dialogWindow.msgBox(primaryText, secondaryText)
}
// MsgBox is the Window method version of the package-scope function MsgBox.
// See that function's documentation and "On Dialogs" in the package overview for more information.
func (w *Window) MsgBox(primaryText string, secondaryText string) (done chan struct{}) {
func (w *Window) MsgBox(primaryText string, secondaryText string) {
if !w.created {
panic("parent window passed to Window.MsgBox() before it was created")
}
return w.msgBox(primaryText, secondaryText)
w.msgBox(primaryText, secondaryText)
}
// MsgBoxError displays a message box to the user with just an OK button and an icon indicating an error.
@ -31,14 +39,14 @@ func (w *Window) MsgBox(primaryText string, secondaryText string) (done chan str
//
// See "On Dialogs" in the package overview for more information.
func MsgBoxError(primaryText string, secondaryText string) {
<-dialogWindow.msgBoxError(primaryText, secondaryText)
dialogWindow.msgBoxError(primaryText, secondaryText)
}
// MsgBoxError is the Window method version of the package-scope function MsgBoxError.
// See that function's documentation and "On Dialogs" in the package overview for more information.
func (w *Window) MsgBoxError(primaryText string, secondaryText string) (done chan struct{}) {
func (w *Window) MsgBoxError(primaryText string, secondaryText string) {
if !w.created {
panic("parent window passed to MsgBoxError() before it was created")
panic("parent window passed to Window.MsgBox() before it was created")
}
return w.msgBoxError(primaryText, secondaryText)
w.msgBoxError(primaryText, secondaryText)
}

56
dialog_darwin.go
View File

@ -3,6 +3,7 @@
package ui
import (
"fmt"
"unsafe"
)
@ -17,43 +18,32 @@ func dialog_send(pchan unsafe.Pointer, res C.intptr_t) {
}()
}
func _msgBox(parent *Window, primarytext string, secondarytext string, style uintptr) chan int {
ret := make(chan int)
uitask <- func() {
var pwin C.id = nil
func _msgBox(parent *Window, primarytext string, secondarytext string, style uintptr) Response {
var pwin C.id = nil
if parent != dialogWindow {
pwin = parent.sysData.id
}
primary := toNSString(primarytext)
secondary := C.id(nil)
if secondarytext != "" {
secondary = toNSString(secondarytext)
}
switch style {
case 0: // normal
C.msgBox(pwin, primary, secondary, unsafe.Pointer(&ret))
case 1: // error
C.msgBoxError(pwin, primary, secondary, unsafe.Pointer(&ret))
}
if parent != dialogWindow {
pwin = parent.sysData.id
}
return ret
primary := toNSString(primarytext)
secondary := C.id(nil)
if secondarytext != "" {
secondary = toNSString(secondarytext)
}
switch style {
case 0: // normal
C.msgBox(pwin, primary, secondary)
return OK
case 1: // error
C.msgBoxError(pwin, primary, secondary)
return OK
}
panic(fmt.Errorf("unknown message box style %d\n", style))
}
func (w *Window) msgBox(primarytext string, secondarytext string) (done chan struct{}) {
done = make(chan struct{})
go func() {
<-_msgBox(w, primarytext, secondarytext, 0)
done <- struct{}{}
}()
return done
func (w *Window) msgBox(primarytext string, secondarytext string) {
_msgBox(w, primarytext, secondarytext, 0)
}
func (w *Window) msgBoxError(primarytext string, secondarytext string) (done chan struct{}) {
done = make(chan struct{})
go func() {
<-_msgBox(w, primarytext, secondarytext, 1)
done <- struct{}{}
}()
return done
func (w *Window) msgBoxError(primarytext string, secondarytext string) {
_msgBox(w, primarytext, secondarytext, 1)
}

21
dialog_darwin.m
View File

@ -9,7 +9,7 @@
#define to(T, x) ((T *) (x))
#define toNSWindow(x) to(NSWindow, (x))
static void alert(id parent, NSString *primary, NSString *secondary, NSAlertStyle style, void *chan)
static intptr_t alert(id parent, NSString *primary, NSString *secondary, NSAlertStyle style)
{
NSAlert *box;
@ -21,20 +21,25 @@ static void alert(id parent, NSString *primary, NSString *secondary, NSAlertStyl
// TODO is there a named constant? will also need to be changed when we add different dialog types
[box addButtonWithTitle:@"OK"];
if (parent == nil)
dialog_send(chan, (intptr_t) [box runModal]);
else
return (intptr_t) [box runModal];
else {
NSInteger ret;
[box beginSheetModalForWindow:toNSWindow(parent)
modalDelegate:[NSApp delegate]
didEndSelector:@selector(alertDidEnd:returnCode:contextInfo:)
contextInfo:chan];
contextInfo:&ret];
// TODO
return (intptr_t) ret;
}
}
void msgBox(id parent, id primary, id secondary, void *chan)
void msgBox(id parent, id primary, id secondary)
{
alert(parent, (NSString *) primary, (NSString *) secondary, NSInformationalAlertStyle, chan);
alert(parent, (NSString *) primary, (NSString *) secondary, NSInformationalAlertStyle);
}
void msgBoxError(id parent, id primary, id secondary, void *chan)
void msgBoxError(id parent, id primary, id secondary)
{
alert(parent, (NSString *) primary, (NSString *) secondary, NSCriticalAlertStyle, chan);
alert(parent, (NSString *) primary, (NSString *) secondary, NSCriticalAlertStyle);
}

89
dialog_unix.go
View File

@ -9,7 +9,6 @@ import (
)
// #include "gtk_unix.h"
// extern void our_dialog_response_callback(GtkDialog *, gint, gpointer);
// /* because cgo seems to choke on ... */
// /* parent will be NULL if there is no parent, so this is fine */
// static inline GtkWidget *gtkNewMsgBox(GtkWindow *parent, GtkMessageType type, GtkButtonsType buttons, char *title, char *text)
@ -23,6 +22,11 @@ import (
// }
import "C"
// the actual type of these constants is GtkResponseType but gtk_dialog_run() returns a gint
var dialogResponses = map[C.gint]Response{
C.GTK_RESPONSE_OK: OK,
}
// dialog performs the bookkeeping involved for having a GtkDialog behave the way we want.
type dialog struct {
parent *Window
@ -30,13 +34,12 @@ type dialog struct {
hadgroup C.gboolean
prevgroup *C.GtkWindowGroup
newgroup *C.GtkWindowGroup
result chan int
result Response
}
func mkdialog(parent *Window) *dialog {
return &dialog{
parent: parent,
result: make(chan int),
}
}
@ -59,36 +62,6 @@ func (d *dialog) prepare() {
}
}
func (d *dialog) run(mk func() *C.GtkWidget) {
d.prepare()
box := mk()
if d.parent == dialogWindow {
go func() {
res := make(chan C.gint)
defer close(res)
uitask <- func() {
r := C.gtk_dialog_run((*C.GtkDialog)(unsafe.Pointer(box)))
d.cleanup(box)
res <- r
}
d.send(<-res)
}()
return
}
// otherwise just connect the delete signal
g_signal_connect_pointer(box, "response", dialog_response_callback, unsafe.Pointer(d))
C.gtk_widget_show_all(box)
}
//export our_dialog_response_callback
func our_dialog_response_callback(box *C.GtkDialog, res C.gint, data C.gpointer) {
d := (*dialog)(unsafe.Pointer(data))
d.cleanup((*C.GtkWidget)(unsafe.Pointer(box)))
go d.send(res) // send on another goroutine, like everything else
}
var dialog_response_callback = C.GCallback(C.our_dialog_response_callback)
func (d *dialog) cleanup(box *C.GtkWidget) {
// have to explicitly close the dialog box, otherwise wacky things will happen
C.gtk_widget_destroy(box)
@ -101,43 +74,33 @@ func (d *dialog) cleanup(box *C.GtkWidget) {
}
}
func (d *dialog) send(res C.gint) {
// this is where processing would go
d.result <- int(res)
func (d *dialog) run(mk func() *C.GtkWidget) {
d.prepare()
box := mk()
r := C.gtk_dialog_run((*C.GtkDialog)(unsafe.Pointer(box)))
d.cleanup(box)
d.result = dialogResponses[r]
}
func _msgBox(parent *Window, primarytext string, secondarytext string, msgtype C.GtkMessageType, buttons C.GtkButtonsType) (result chan int) {
result = make(chan int)
func _msgBox(parent *Window, primarytext string, secondarytext string, msgtype C.GtkMessageType, buttons C.GtkButtonsType) (response Response) {
d := mkdialog(parent)
uitask <- func() {
cprimarytext := C.CString(primarytext)
defer C.free(unsafe.Pointer(cprimarytext))
csecondarytext := (*C.char)(nil)
if secondarytext != "" {
csecondarytext = C.CString(secondarytext)
defer C.free(unsafe.Pointer(csecondarytext))
}
d.run(func() *C.GtkWidget {
return C.gtkNewMsgBox(d.pwin, msgtype, buttons, cprimarytext, csecondarytext)
})
cprimarytext := C.CString(primarytext)
defer C.free(unsafe.Pointer(cprimarytext))
csecondarytext := (*C.char)(nil)
if secondarytext != "" {
csecondarytext = C.CString(secondarytext)
defer C.free(unsafe.Pointer(csecondarytext))
}
d.run(func() *C.GtkWidget {
return C.gtkNewMsgBox(d.pwin, msgtype, buttons, cprimarytext, csecondarytext)
})
return d.result
}
func (w *Window) msgBox(primarytext string, secondarytext string) (done chan struct{}) {
done = make(chan struct{})
go func() {
<-_msgBox(w, primarytext, secondarytext, C.GtkMessageType(C.GTK_MESSAGE_OTHER), C.GtkButtonsType(C.GTK_BUTTONS_OK))
done <- struct{}{}
}()
return done
func (w *Window) msgBox(primarytext string, secondarytext string) {
_msgBox(w, primarytext, secondarytext, C.GtkMessageType(C.GTK_MESSAGE_OTHER), C.GtkButtonsType(C.GTK_BUTTONS_OK))
}
func (w *Window) msgBoxError(primarytext string, secondarytext string) (done chan struct{}) {
done = make(chan struct{})
go func() {
<-_msgBox(w, primarytext, secondarytext, C.GtkMessageType(C.GTK_MESSAGE_ERROR), C.GtkButtonsType(C.GTK_BUTTONS_OK))
done <- struct{}{}
}()
return done
func (w *Window) msgBoxError(primarytext string, secondarytext string) {
_msgBox(w, primarytext, secondarytext, C.GtkMessageType(C.GTK_MESSAGE_ERROR), C.GtkButtonsType(C.GTK_BUTTONS_OK))
}

54
dialog_windows.go
View File

@ -11,7 +11,11 @@ var (
_messageBox = user32.NewProc("MessageBoxW")
)
func _msgBox(parent *Window, primarytext string, secondarytext string, uType uint32) (result chan int) {
var dialogResponses = map[uintptr]Response{
_IDOK: OK,
}
func _msgBox(parent *Window, primarytext string, secondarytext string, uType uint32) Response {
// http://msdn.microsoft.com/en-us/library/windows/desktop/aa511267.aspx says "Use task dialogs whenever appropriate to achieve a consistent look and layout. Task dialogs require Windows Vista® or later, so they aren't suitable for earlier versions of Windows. If you must use a message box, separate the main instruction from the supplemental instruction with two line breaks."
text := primarytext
if secondarytext != "" {
@ -26,43 +30,21 @@ func _msgBox(parent *Window, primarytext string, secondarytext string, uType uin
} else {
uType |= _MB_TASKMODAL // make modal to every window in the program (they're all windows of the uitask, which is a single thread)
}
retchan := make(chan int)
go func() {
ret := make(chan uiret)
defer close(ret)
uitask <- &uimsg{
call: _messageBox,
p: []uintptr{
uintptr(parenthwnd),
utf16ToArg(ptext),
utf16ToArg(ptitle),
uintptr(uType),
},
ret: ret,
}
r := <-ret
if r.ret == 0 { // failure
panic(fmt.Sprintf("error displaying message box to user: %v\nstyle: 0x%08X\ntitle: %q\ntext:\n%s", r.err, uType, os.Args[0], text))
}
retchan <- int(r.ret)
}()
return retchan
r1, _, err := _messageBox.Call(
uintptr(parenthwnd),
utf16ToArg(ptext),
utf16ToArg(ptitle),
uintptr(uType))
if r1 == 0 { // failure
panic(fmt.Sprintf("error displaying message box to user: %v\nstyle: 0x%08X\ntitle: %q\ntext:\n%s", err, uType, os.Args[0], text))
}
return dialogResponses[r1]
}
func (w *Window) msgBox(primarytext string, secondarytext string) (done chan struct{}) {
done = make(chan struct{})
go func() {
<-_msgBox(w, primarytext, secondarytext, _MB_OK)
done <- struct{}{}
}()
return done
func (w *Window) msgBox(primarytext string, secondarytext string) {
_msgBox(w, primarytext, secondarytext, _MB_OK)
}
func (w *Window) msgBoxError(primarytext string, secondarytext string) (done chan struct{}) {
done = make(chan struct{})
go func() {
<-_msgBox(w, primarytext, secondarytext, _MB_OK|_MB_ICONERROR)
done <- struct{}{}
}()
return done
func (w *Window) msgBoxError(primarytext string, secondarytext string) {
_msgBox(w, primarytext, secondarytext, _MB_OK|_MB_ICONERROR)
}

11
grid.go
View File

@ -4,7 +4,6 @@ package ui
import (
"fmt"
"sync"
)
// A Grid arranges Controls in a two-dimensional grid.
@ -16,7 +15,6 @@ import (
// A stretchy Control implicitly fills its cell.
// All cooridnates in a Grid are given in (row,column) form with (0,0) being the top-left cell.
type Grid struct {
lock sync.Mutex
created bool
controls [][]Control
filling [][]bool
@ -69,9 +67,6 @@ func NewGrid(nPerRow int, controls ...Control) *Grid {
// This function cannot be called after the Window that contains the Grid has been created.
// It panics if the given coordinate is invalid.
func (g *Grid) SetFilling(row int, column int) {
g.lock.Lock()
defer g.lock.Unlock()
if g.created {
panic(fmt.Errorf("Grid.SetFilling() called after window create"))
}
@ -87,9 +82,6 @@ func (g *Grid) SetFilling(row int, column int) {
// This function cannot be called after the Window that contains the Grid has been created.
// It panics if the given coordinate is invalid.
func (g *Grid) SetStretchy(row int, column int) {
g.lock.Lock()
defer g.lock.Unlock()
if g.created {
panic(fmt.Errorf("Grid.SetFilling() called after window create"))
}
@ -102,9 +94,6 @@ func (g *Grid) SetStretchy(row int, column int) {
}
func (g *Grid) make(window *sysData) error {
g.lock.Lock()
defer g.lock.Unlock()
// commit filling for the stretchy control now (see SetStretchy() above)
if g.stretchyrow != -1 && g.stretchycol != -1 {
g.filling[g.stretchyrow][g.stretchycol] = true

61
init.go
View File

@ -2,28 +2,53 @@
package ui
// Go sets up the UI environment and runs main in a goroutine.
// If initialization fails, Go returns an error and main is not called.
// Otherwise, Go does not return to its caller until main does, at which point it returns nil.
// After it returns, you cannot call future ui functions/methods meaningfully.
import (
"runtime"
)
// Go sets up the UI environment and pulses Ready.
// If initialization fails, Go returns an error and Ready is not pulsed.
// Otherwise, Go does not return to its caller until Stop is pulsed, at which point Go() will return nil.
// After Go() returns, you cannot call future ui functions/methods meaningfully.
// Pulsing Stop will cause Go() to return immediately; the programmer is responsible for cleaning up (for instance, hiding open Windows) beforehand.
//
// It is not safe to call ui.Go() in a goroutine. It must be called directly from main().
// It is not safe to call ui.Go() in a goroutine. It must be called directly from main(). This means if your code calls other code-modal servers (such as http.ListenAndServe()), they must be run from goroutines. (This is due to limitations in various OSs, such as Mac OS X.)
//
// This model is undesirable, but Cocoa limitations require it.
//
// Go does not process the command line for flags (that is, it does not call flag.Parse()), nor does package ui add any of the underlying toolkit's supported command-line flags.
// Go() does not process the command line for flags (that is, it does not call flag.Parse()), nor does package ui add any of the underlying toolkit's supported command-line flags.
// If you must, and if the toolkit also has environment variable equivalents to these flags (for instance, GTK+), use those instead.
func Go(main func()) error {
return ui(main)
func Go() error {
runtime.LockOSThread()
if err := uiinit(); err != nil {
return err
}
Ready <- struct{}{}
close(Ready)
ui()
return nil
}
// AppQuit is pulsed when the user decides to quit the program if their operating system provides a facility for quitting an entire application, rather than merely close all windows (for instance, Mac OS X via the Dock icon).
// You should assign one of your Windows's Closing to this variable so the user choosing to quit the application is treated the same as closing that window.
// If you do not respond to this signal, nothing will happen; regardless of whether or not you respond to this signal, the application will not quit.
// Do not merely check this channel alone; it is not guaranteed to be pulsed on all systems or in all conditions.
var AppQuit chan struct{}
// Ready is pulsed when Go() is ready to begin accepting requests to the safe methods.
// Go() will wait for something to receive on Ready, then Ready will be closed.
var Ready = make(chan struct{})
func init() {
// don't expose this in the documentation
AppQuit = newEvent()
// Stop should be pulsed when you are ready for Go() to return.
// Pulsing Stop will cause Go() to return immediately; the programmer is responsible for cleaning up (for instance, hiding open Windows) beforehand.
// Do not pulse Stop more than once.
var Stop = make(chan struct{})
// This function is a simple helper functionn that basically pushes the effect of a function call for later. This allows the selected safe Window methods to be safe.
// TODO make sure this acts sanely if called from uitask itself
func touitask(f func()) {
done := make(chan struct{})
defer close(done)
go func() { // to avoid locking uitask itself
done2 := make(chan struct{}) // make the chain uitask <- f <- uitask to avoid deadlocks
defer close(done2)
uitask <- func() {
f()
done2 <- struct{}{}
}
done <- <-done2
}()
<-done
}

14
label.go
View File

@ -2,16 +2,11 @@
package ui
import (
"sync"
)
// A Label is a static line of text used to mark other controls.
// Label text is drawn on a single line; text that does not fit is truncated.
// A Label can appear in one of two places: bound to a control or standalone.
// This determines the vertical alignment of the label.
type Label struct {
lock sync.Mutex
created bool
sysData *sysData
initText string
@ -39,9 +34,6 @@ func NewStandaloneLabel(text string) *Label {
// SetText sets the Label's text.
func (l *Label) SetText(text string) {
l.lock.Lock()
defer l.lock.Unlock()
if l.created {
l.sysData.setText(text)
return
@ -51,9 +43,6 @@ func (l *Label) SetText(text string) {
// Text returns the Label's text.
func (l *Label) Text() string {
l.lock.Lock()
defer l.lock.Unlock()
if l.created {
return l.sysData.text()
}
@ -61,9 +50,6 @@ func (l *Label) Text() string {
}
func (l *Label) make(window *sysData) error {
l.lock.Lock()
defer l.lock.Unlock()
l.sysData.alternate = l.standalone
err := l.sysData.make(window)
if err != nil {

14
lineedit.go
View File

@ -2,13 +2,8 @@
package ui
import (
"sync"
)
// A LineEdit is a control which allows you to enter a single line of text.
type LineEdit struct {
lock sync.Mutex
created bool
sysData *sysData
initText string
@ -33,9 +28,6 @@ func NewPasswordEdit() *LineEdit {
// SetText sets the LineEdit's text.
func (l *LineEdit) SetText(text string) {
l.lock.Lock()
defer l.lock.Unlock()
if l.created {
l.sysData.setText(text)
return
@ -45,9 +37,6 @@ func (l *LineEdit) SetText(text string) {
// Text returns the LineEdit's text.
func (l *LineEdit) Text() string {
l.lock.Lock()
defer l.lock.Unlock()
if l.created {
return l.sysData.text()
}
@ -55,9 +44,6 @@ func (l *LineEdit) Text() string {
}
func (l *LineEdit) make(window *sysData) error {
l.lock.Lock()
defer l.lock.Unlock()
l.sysData.alternate = l.password
err := l.sysData.make(window)
if err != nil {

23
listbox.go
View File

@ -4,7 +4,6 @@ package ui
import (
"fmt"
"sync"
)
// A Listbox is a vertical list of items, of which either at most one or any number of items can be selected at any given time.
@ -12,7 +11,6 @@ import (
// For information on scrollbars, see "Scrollbars" in the Overview.
// Due to implementation issues, the presence of horizontal scrollbars is currently implementation-defined.
type Listbox struct {
lock sync.Mutex
created bool
sysData *sysData
initItems []string
@ -40,9 +38,6 @@ func NewMultiSelListbox(items ...string) *Listbox {
// Append adds items to the end of the Listbox's list.
// Append will panic if something goes wrong on platforms that do not abort themselves.
func (l *Listbox) Append(what ...string) {
l.lock.Lock()
defer l.lock.Unlock()
if l.created {
for _, s := range what {
l.sysData.append(s)
@ -55,9 +50,6 @@ func (l *Listbox) Append(what ...string) {
// InsertBefore inserts a new item in the Listbox before the item at the given position. It panics if the given index is out of bounds.
// InsertBefore will also panic if something goes wrong on platforms that do not abort themselves.
func (l *Listbox) InsertBefore(what string, before int) {
l.lock.Lock()
defer l.lock.Unlock()
var m []string
if l.created {
@ -81,9 +73,6 @@ badrange:
// Delete removes the given item from the Listbox. It panics if the given index is out of bounds.
func (l *Listbox) Delete(index int) {
l.lock.Lock()
defer l.lock.Unlock()
if l.created {
if index < 0 || index >= l.sysData.len() {
goto badrange
@ -102,9 +91,6 @@ badrange:
// Selection returns a list of strings currently selected in the Listbox, or an empty list if none have been selected. This list will have at most one item on a single-selection Listbox.
func (l *Listbox) Selection() []string {
l.lock.Lock()
defer l.lock.Unlock()
if l.created {
return l.sysData.selectedTexts()
}
@ -113,9 +99,6 @@ func (l *Listbox) Selection() []string {
// SelectedIndices returns a list of the currently selected indexes in the Listbox, or an empty list if none have been selected. This list will have at most one item on a single-selection Listbox.
func (l *Listbox) SelectedIndices() []int {
l.lock.Lock()
defer l.lock.Unlock()
if l.created {
return l.sysData.selectedIndices()
}
@ -126,9 +109,6 @@ func (l *Listbox) SelectedIndices() []int {
//
// On platforms for which this function may return an error, it panics if one is returned.
func (l *Listbox) Len() int {
l.lock.Lock()
defer l.lock.Unlock()
if l.created {
return l.sysData.len()
}
@ -136,9 +116,6 @@ func (l *Listbox) Len() int {
}
func (l *Listbox) make(window *sysData) (err error) {
l.lock.Lock()
defer l.lock.Unlock()
err = l.sysData.make(window)
if err != nil {
return err

4
objc_darwin.h
View File

@ -68,8 +68,8 @@ extern void breakMainLoop(void);
extern void cocoaMainLoop(void);
/* dialog_darwin.m */
extern void msgBox(id, id, id, void *);
extern void msgBoxError(id, id, id, void *);
extern void msgBox(id, id, id);
extern void msgBoxError(id, id, id);
/* listbox_darwin.m */
extern id toListboxItem(id, id);

11
progressbar.go
View File

@ -2,16 +2,11 @@
package ui
import (
"sync"
)
// A ProgressBar is a horizontal rectangle that fills up from left to right to indicate the progress of a long-running task.
// This progress is represented by an integer within the range [0,100], representing a percentage.
// Alternatively, a progressbar can show an animation indicating that progress is being made but how much is indeterminate.
// Newly-created ProgressBars default to showing 0% progress.
type ProgressBar struct {
lock sync.Mutex
created bool
sysData *sysData
initProg int
@ -30,9 +25,6 @@ func NewProgressBar() *ProgressBar {
// Otherwise, SetProgress panics.
// Calling SetProgress(-1) repeatedly will neither leave indeterminate mode nor stop any animation involved in indeterminate mode indefinitely; any other side-effect of doing so is implementation-defined.
func (p *ProgressBar) SetProgress(percent int) {
p.lock.Lock()
defer p.lock.Unlock()
if percent < -1 || percent > 100 {
panic("percent value out of range")
}
@ -44,9 +36,6 @@ func (p *ProgressBar) SetProgress(percent int) {
}
func (p *ProgressBar) make(window *sysData) error {
p.lock.Lock()
defer p.lock.Unlock()
err := p.sysData.make(window)
if err != nil {
return err

8
stack.go
View File

@ -4,7 +4,6 @@ package ui
import (
"fmt"
"sync"
)
type orientation bool
@ -20,7 +19,6 @@ const (
// Any extra space at the end of a Stack is left blank.
// Some controls may be marked as "stretchy": when the Window they are in changes size, stretchy controls resize to take up the remaining space after non-stretchy controls are laid out. If multiple controls are marked stretchy, they are alloted equal distribution of the remaining space.
type Stack struct {
lock sync.Mutex
created bool
orientation orientation
controls []Control
@ -51,9 +49,6 @@ func NewVerticalStack(controls ...Control) *Stack {
// SetStretchy marks a control in a Stack as stretchy. This cannot be called once the Window containing the Stack has been created.
// It panics if index is out of range.
func (s *Stack) SetStretchy(index int) {
s.lock.Lock()
defer s.lock.Unlock()
if s.created {
panic("call to Stack.SetStretchy() after Stack has been created")
}
@ -64,9 +59,6 @@ func (s *Stack) SetStretchy(index int) {
}
func (s *Stack) make(window *sysData) error {
s.lock.Lock()
defer s.lock.Unlock()
for i, c := range s.controls {
err := c.make(window)
if err != nil {

8
stdwndclass_windows.go
View File

@ -116,7 +116,7 @@ func stdWndProc(hwnd _HWND, uMsg uint32, wParam _WPARAM, lParam _LPARAM) _LRESUL
switch ss.ctype {
case c_button:
if wParam.HIWORD() == _BN_CLICKED {
ss.signal()
ss.event()
}
case c_checkbox:
// we opt into doing this ourselves because http://blogs.msdn.com/b/oldnewthing/archive/2014/05/22/10527522.aspx
@ -164,7 +164,11 @@ func stdWndProc(hwnd _HWND, uMsg uint32, wParam _WPARAM, lParam _LPARAM) _LRESUL
}
return 0
case _WM_CLOSE:
s.signal()
close := false // TODO decide apt default
s.close(&close)
if close {
s.hide()
}
return 0
default:
return defWindowProc(hwnd, uMsg, wParam, lParam)

26
sysdata.go
View File

@ -2,21 +2,16 @@
package ui
const eventbufsiz = 100 // suggested by skelterjohn
// newEvent returns a new channel suitable for listening for events.
func newEvent() chan struct{} {
return make(chan struct{}, eventbufsiz)
}
// The sysData type contains all system data. It provides the system-specific underlying implementation. It is guaranteed to have the following by embedding:
type cSysData struct {
ctype int
event chan struct{}
allocate func(x int, y int, width int, height int, d *sysSizeData) []*allocation
spaced bool
alternate bool // editable for Combobox, multi-select for listbox, password for lineedit
handler AreaHandler // for Areas
handler AreaHandler // for Areas; TODO rename to areahandler
winhandler WindowHandler // for Windows
close func(*bool) // provided by each Window
event func() // provided by each control
}
// this interface is used to make sure all sysDatas are synced
@ -44,19 +39,6 @@ var _xSysData interface {
setChecked(bool)
} = &sysData{} // this line will error if there's an inconsistency
// signal sends the event signal. This raise is done asynchronously to avoid deadlocking the UI task.
// Thanks skelterjohn for this techinque: if we can't queue any more events, drop them
func (s *cSysData) signal() {
if s.event != nil {
go func() {
select {
case s.event <- struct{}{}:
default:
}
}()
}
}
const (
c_window = iota
c_button

152
sysdata_darwin.go
View File

@ -225,17 +225,9 @@ func (s *sysData) make(window *sysData) error {
if window != nil {
parentWindow = window.id
}
ret := make(chan C.id)
defer close(ret)
uitask <- func() {
ret <- ct.make(parentWindow, s.alternate, s)
}
s.id = <-ret
s.id = ct.make(parentWindow, s.alternate, s)
if ct.getinside != nil {
uitask <- func() {
ret <- ct.getinside(s.id)
}
addSysData(<-ret, s)
addSysData(ct.getinside(s.id), s)
} else {
addSysData(s.id, s)
}
@ -249,33 +241,15 @@ func (s *sysData) firstShow() error {
}
func (s *sysData) show() {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
classTypes[s.ctype].show(s.id)
ret <- struct{}{}
}
<-ret
classTypes[s.ctype].show(s.id)
}
func (s *sysData) hide() {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
classTypes[s.ctype].hide(s.id)
ret <- struct{}{}
}
<-ret
classTypes[s.ctype].hide(s.id)
}
func (s *sysData) setText(text string) {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
classTypes[s.ctype].settext(s.id, toNSString(text))
ret <- struct{}{}
}
<-ret
classTypes[s.ctype].settext(s.id, toNSString(text))
}
func (s *sysData) setRect(x int, y int, width int, height int, winheight int) error {
@ -288,147 +262,63 @@ func (s *sysData) setRect(x int, y int, width int, height int, winheight int) er
}
func (s *sysData) isChecked() bool {
ret := make(chan bool)
defer close(ret)
uitask <- func() {
ret <- C.isCheckboxChecked(s.id) != C.NO
}
return <-ret
return C.isCheckboxChecked(s.id) != C.NO
}
func (s *sysData) text() string {
ret := make(chan string)
defer close(ret)
uitask <- func() {
str := classTypes[s.ctype].text(s.id, s.alternate)
ret <- fromNSString(str)
}
return <-ret
str := classTypes[s.ctype].text(s.id, s.alternate)
return fromNSString(str)
}
func (s *sysData) append(what string) {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
classTypes[s.ctype].append(s.id, what, s.alternate)
ret <- struct{}{}
}
<-ret
classTypes[s.ctype].append(s.id, what, s.alternate)
}
func (s *sysData) insertBefore(what string, before int) {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
classTypes[s.ctype].insertBefore(s.id, what, before, s.alternate)
ret <- struct{}{}
}
<-ret
classTypes[s.ctype].insertBefore(s.id, what, before, s.alternate)
}
func (s *sysData) selectedIndex() int {
ret := make(chan int)
defer close(ret)
uitask <- func() {
ret <- classTypes[s.ctype].selIndex(s.id)
}
return <-ret
return classTypes[s.ctype].selIndex(s.id)
}
func (s *sysData) selectedIndices() []int {
ret := make(chan []int)
defer close(ret)
uitask <- func() {
ret <- classTypes[s.ctype].selIndices(s.id)
}
return <-ret
return classTypes[s.ctype].selIndices(s.id)
}
func (s *sysData) selectedTexts() []string {
ret := make(chan []string)
defer close(ret)
uitask <- func() {
ret <- classTypes[s.ctype].selTexts(s.id)
}
return <-ret
return classTypes[s.ctype].selTexts(s.id)
}
func (s *sysData) setWindowSize(width int, height int) error {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
C.windowSetContentSize(s.id, C.intptr_t(width), C.intptr_t(height))
ret <- struct{}{}
}
<-ret
C.windowSetContentSize(s.id, C.intptr_t(width), C.intptr_t(height))
return nil
}
func (s *sysData) delete(index int) {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
classTypes[s.ctype].delete(s.id, index)
ret <- struct{}{}
}
<-ret
classTypes[s.ctype].delete(s.id, index)
}
func (s *sysData) setProgress(percent int) {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
C.setProgress(s.id, C.intptr_t(percent))
ret <- struct{}{}
}
<-ret
C.setProgress(s.id, C.intptr_t(percent))
}
func (s *sysData) len() int {
ret := make(chan int)
defer close(ret)
uitask <- func() {
ret <- classTypes[s.ctype].len(s.id)
}
return <-ret
return classTypes[s.ctype].len(s.id)
}
func (s *sysData) setAreaSize(width int, height int) {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
C.setAreaSize(s.id, C.intptr_t(width), C.intptr_t(height))
ret <- struct{}{}
}
<-ret
C.setAreaSize(s.id, C.intptr_t(width), C.intptr_t(height))
}
func (s *sysData) repaintAll() {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
C.display(s.id)
ret <- struct{}{}
}
<-ret
C.display(s.id)
}
func (s *sysData) center() {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
C.center(s.id)
ret <- struct{}{}
}
<-ret
C.center(s.id)
}
func (s *sysData) setChecked(checked bool) {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
C.setCheckboxChecked(s.id, toBOOL(checked))
ret <- struct{}{}
}
<-ret
C.setCheckboxChecked(s.id, toBOOL(checked))
}

236
sysdata_unix.go
View File

@ -118,42 +118,30 @@ var classTypes = [nctypes]*classData{
func (s *sysData) make(window *sysData) error {
ct := classTypes[s.ctype]
ret := make(chan *C.GtkWidget)
defer close(ret)
uitask <- func() {
if s.alternate {
ret <- ct.makeAlt()
return
}
ret <- ct.make()
if s.alternate {
s.widget = ct.makeAlt()
} else {
s.widget = ct.make()
}
s.widget = <-ret
if window == nil {
uitask <- func() {
fixed := gtkNewWindowLayout()
gtk_container_add(s.widget, fixed)
for signame, sigfunc := range ct.signals {
g_signal_connect(s.widget, signame, sigfunc, s)
}
ret <- fixed
fixed := gtkNewWindowLayout()
gtk_container_add(s.widget, fixed)
for signame, sigfunc := range ct.signals {
g_signal_connect(s.widget, signame, sigfunc, s)
}
s.container = <-ret
s.container = fixed
} else {
s.container = window.container
uitask <- func() {
gtkAddWidgetToLayout(s.container, s.widget)
for signame, sigfunc := range ct.signals {
g_signal_connect(s.widget, signame, sigfunc, s)
}
if ct.child != nil {
child := ct.child(s.widget)
for signame, sigfunc := range ct.childsigs {
g_signal_connect(child, signame, sigfunc, s)
}
}
ret <- nil
gtkAddWidgetToLayout(s.container, s.widget)
for signame, sigfunc := range ct.signals {
g_signal_connect(s.widget, signame, sigfunc, s)
}
if ct.child != nil {
child := ct.child(s.widget)
for signame, sigfunc := range ct.childsigs {
g_signal_connect(child, signame, sigfunc, s)
}
}
<-ret
}
return nil
}
@ -170,35 +158,17 @@ func (s *sysData) firstShow() error {
}
func (s *sysData) show() {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
gtk_widget_show(s.widget)
s.resetposition()
ret <- struct{}{}
}
<-ret
gtk_widget_show(s.widget)
s.resetposition()
}
func (s *sysData) hide() {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
gtk_widget_hide(s.widget)
s.resetposition()
ret <- struct{}{}
}
<-ret
gtk_widget_hide(s.widget)
s.resetposition()
}
func (s *sysData) setText(text string) {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
classTypes[s.ctype].setText(s.widget, text)
ret <- struct{}{}
}
<-ret
classTypes[s.ctype].setText(s.widget, text)
}
func (s *sysData) setRect(x int, y int, width int, height int, winheight int) error {
@ -208,103 +178,51 @@ func (s *sysData) setRect(x int, y int, width int, height int, winheight int) er
}
func (s *sysData) isChecked() bool {
ret := make(chan bool)
defer close(ret)
uitask <- func() {
ret <- gtk_toggle_button_get_active(s.widget)
}
return <-ret
return gtk_toggle_button_get_active(s.widget)
}
func (s *sysData) text() string {
ret := make(chan string)
defer close(ret)
uitask <- func() {
ret <- classTypes[s.ctype].text(s.widget)
}
return <-ret
return classTypes[s.ctype].text(s.widget)
}
func (s *sysData) append(what string) {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
classTypes[s.ctype].append(s.widget, what)
ret <- struct{}{}
}
<-ret
classTypes[s.ctype].append(s.widget, what)
}
func (s *sysData) insertBefore(what string, before int) {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
classTypes[s.ctype].insert(s.widget, before, what)
ret <- struct{}{}
}
<-ret
classTypes[s.ctype].insert(s.widget, before, what)
}
func (s *sysData) selectedIndex() int {
ret := make(chan int)
defer close(ret)
uitask <- func() {
ret <- classTypes[s.ctype].selected(s.widget)
}
return <-ret
return classTypes[s.ctype].selected(s.widget)
}
func (s *sysData) selectedIndices() []int {
ret := make(chan []int)
defer close(ret)
uitask <- func() {
ret <- classTypes[s.ctype].selMulti(s.widget)
}
return <-ret
return classTypes[s.ctype].selMulti(s.widget)
}
func (s *sysData) selectedTexts() []string {
ret := make(chan []string)
defer close(ret)
uitask <- func() {
ret <- classTypes[s.ctype].smtexts(s.widget)
}
return <-ret
return classTypes[s.ctype].smtexts(s.widget)
}
func (s *sysData) setWindowSize(width int, height int) error {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
// does not take window geometry into account (and cannot, since the window manager won't give that info away)
// thanks to TingPing in irc.gimp.net/#gtk+
gtk_window_resize(s.widget, width, height)
ret <- struct{}{}
}
<-ret
// does not take window geometry into account (and cannot, since the window manager won't give that info away)
// thanks to TingPing in irc.gimp.net/#gtk+
gtk_window_resize(s.widget, width, height)
return nil
}
func (s *sysData) delete(index int) {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
classTypes[s.ctype].delete(s.widget, index)
ret <- struct{}{}
}
<-ret
classTypes[s.ctype].delete(s.widget, index)
}
// With GTK+, we must manually pulse the indeterminate progressbar ourselves. This goroutine does that.
func (s *sysData) progressPulse() {
// TODO this could probably be done differently...
pulse := func() {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
touitask(func() {
gtk_progress_bar_pulse(s.widget)
ret <- struct{}{}
}
<-ret
})
}
var ticker *time.Ticker
@ -345,78 +263,44 @@ func (s *sysData) setProgress(percent int) {
}
s.pulse <- false
<-s.pulse // wait for sysData.progressPulse() to register that
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
gtk_progress_bar_set_fraction(s.widget, percent)
ret <- struct{}{}
}
<-ret
gtk_progress_bar_set_fraction(s.widget, percent)
}
func (s *sysData) len() int {
ret := make(chan int)
defer close(ret)
uitask <- func() {
ret <- classTypes[s.ctype].len(s.widget)
}
return <-ret
return classTypes[s.ctype].len(s.widget)
}
func (s *sysData) setAreaSize(width int, height int) {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
c := gtkAreaGetControl(s.widget)
gtk_widget_set_size_request(c, width, height)
s.areawidth = width // for sysData.preferredSize()
s.areaheight = height
C.gtk_widget_queue_draw(c)
ret <- struct{}{}
}
<-ret
c := gtkAreaGetControl(s.widget)
gtk_widget_set_size_request(c, width, height)
s.areawidth = width // for sysData.preferredSize()
s.areaheight = height
C.gtk_widget_queue_draw(c)
}
// TODO should this be made safe? (TODO move to area.go)
func (s *sysData) repaintAll() {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
c := gtkAreaGetControl(s.widget)
C.gtk_widget_queue_draw(c)
ret <- struct{}{}
}
<-ret
c := gtkAreaGetControl(s.widget)
C.gtk_widget_queue_draw(c)
}
func (s *sysData) center() {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
if C.gtk_widget_get_visible(s.widget) == C.FALSE {
// hint to the WM to make it centered when it is shown again
// thanks to Jasper in irc.gimp.net/#gtk+
C.gtk_window_set_position(togtkwindow(s.widget), C.GTK_WIN_POS_CENTER)
} else {
var width, height C.gint
if C.gtk_widget_get_visible(s.widget) == C.FALSE {
// hint to the WM to make it centered when it is shown again
// thanks to Jasper in irc.gimp.net/#gtk+
C.gtk_window_set_position(togtkwindow(s.widget), C.GTK_WIN_POS_CENTER)
} else {
var width, height C.gint
s.resetposition()
//we should be able to use gravity to simplify this, but it doesn't take effect immediately, and adding show calls does nothing (thanks Jasper in irc.gimp.net/#gtk+)
C.gtk_window_get_size(togtkwindow(s.widget), &width, &height)
C.gtk_window_move(togtkwindow(s.widget),
(C.gdk_screen_width() / 2) - (width / 2),
(C.gdk_screen_height() / 2) - (width / 2))
}
ret <- struct{}{}
s.resetposition()
//we should be able to use gravity to simplify this, but it doesn't take effect immediately, and adding show calls does nothing (thanks Jasper in irc.gimp.net/#gtk+)
C.gtk_window_get_size(togtkwindow(s.widget), &width, &height)
C.gtk_window_move(togtkwindow(s.widget),
(C.gdk_screen_width() / 2) - (width / 2),
(C.gdk_screen_height() / 2) - (width / 2))
}
<-ret
}
func (s *sysData) setChecked(checked bool) {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
gtk_toggle_button_set_active(s.widget, checked)
ret <- struct{}{}
}
<-ret
gtk_toggle_button_set_active(s.widget, checked)
}

596
sysdata_windows.go
View File

@ -148,58 +148,52 @@ var (
)
func (s *sysData) make(window *sysData) (err error) {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
ct := classTypes[s.ctype]
cid := _HMENU(0)
pwin := uintptr(_NULL)
if window != nil { // this is a child control
cid = window.addChild(s)
pwin = uintptr(window.hwnd)
}
style := uintptr(ct.style)
if s.alternate {
style = uintptr(ct.altStyle)
}
lpParam := uintptr(_NULL)
if ct.storeSysData {
lpParam = uintptr(unsafe.Pointer(s))
}
r1, _, err := _createWindowEx.Call(
uintptr(ct.xstyle),
utf16ToArg(ct.name),
blankString, // we set the window text later
style,
negConst(_CW_USEDEFAULT),
negConst(_CW_USEDEFAULT),
negConst(_CW_USEDEFAULT),
negConst(_CW_USEDEFAULT),
pwin,
uintptr(cid),
uintptr(hInstance),
lpParam)
if r1 == 0 { // failure
if window != nil {
window.delChild(cid)
}
panic(fmt.Errorf("error actually creating window/control: %v", err))
}
if !ct.storeSysData { // regular control; store s.hwnd ourselves
s.hwnd = _HWND(r1)
} else if s.hwnd != _HWND(r1) { // we store sysData in storeSysData(); sanity check
panic(fmt.Errorf("hwnd mismatch creating window/control: storeSysData() stored 0x%X but CreateWindowEx() returned 0x%X", s.hwnd, r1))
}
if !ct.doNotLoadFont {
_sendMessage.Call(
uintptr(s.hwnd),
uintptr(_WM_SETFONT),
uintptr(_WPARAM(controlFont)),
uintptr(_LPARAM(_TRUE)))
}
ret <- struct{}{}
ct := classTypes[s.ctype]
cid := _HMENU(0)
pwin := uintptr(_NULL)
if window != nil { // this is a child control
cid = window.addChild(s)
pwin = uintptr(window.hwnd)
}
style := uintptr(ct.style)
if s.alternate {
style = uintptr(ct.altStyle)
}
lpParam := uintptr(_NULL)
if ct.storeSysData {
lpParam = uintptr(unsafe.Pointer(s))
}
r1, _, err := _createWindowEx.Call(
uintptr(ct.xstyle),
utf16ToArg(ct.name),
blankString, // we set the window text later
style,
negConst(_CW_USEDEFAULT),
negConst(_CW_USEDEFAULT),
negConst(_CW_USEDEFAULT),
negConst(_CW_USEDEFAULT),
pwin,
uintptr(cid),
uintptr(hInstance),
lpParam)
if r1 == 0 { // failure
if window != nil {
window.delChild(cid)
}
panic(fmt.Errorf("error actually creating window/control: %v", err))
}
if !ct.storeSysData { // regular control; store s.hwnd ourselves
s.hwnd = _HWND(r1)
} else if s.hwnd != _HWND(r1) { // we store sysData in storeSysData(); sanity check
panic(fmt.Errorf("hwnd mismatch creating window/control: storeSysData() stored 0x%X but CreateWindowEx() returned 0x%X", s.hwnd, r1))
}
if !ct.doNotLoadFont {
_sendMessage.Call(
uintptr(s.hwnd),
uintptr(_WM_SETFONT),
uintptr(_WPARAM(controlFont)),
uintptr(_LPARAM(_TRUE)))
}
<-ret
return nil
}
@ -211,63 +205,38 @@ var (
// ShowWindow(hwnd, nCmdShow);
// UpdateWindow(hwnd);
func (s *sysData) firstShow() error {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
_showWindow.Call(
uintptr(s.hwnd),
uintptr(nCmdShow))
r1, _, err := _updateWindow.Call(uintptr(s.hwnd))
if r1 == 0 { // failure
panic(fmt.Errorf("error updating window for the first time: %v", err))
}
ret <- struct{}{}
_showWindow.Call(
uintptr(s.hwnd),
uintptr(nCmdShow))
r1, _, err := _updateWindow.Call(uintptr(s.hwnd))
if r1 == 0 { // failure
panic(fmt.Errorf("error updating window for the first time: %v", err))
}
<-ret
return nil
}
func (s *sysData) show() {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
_showWindow.Call(
uintptr(s.hwnd),
uintptr(_SW_SHOW))
ret <- struct{}{}
}
<-ret
_showWindow.Call(
uintptr(s.hwnd),
uintptr(_SW_SHOW))
}
func (s *sysData) hide() {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
_showWindow.Call(
uintptr(s.hwnd),
uintptr(_SW_HIDE))
ret <- struct{}{}
}
<-ret
_showWindow.Call(
uintptr(s.hwnd),
uintptr(_SW_HIDE))
}
func (s *sysData) setText(text string) {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
ptext := toUTF16(text)
r1, _, err := _setWindowText.Call(
uintptr(s.hwnd),
utf16ToArg(ptext))
if r1 == 0 { // failure
panic(fmt.Errorf("error setting window/control text: %v", err))
}
ret <- struct{}{}
ptext := toUTF16(text)
r1, _, err := _setWindowText.Call(
uintptr(s.hwnd),
utf16ToArg(ptext))
if r1 == 0 { // failure
panic(fmt.Errorf("error setting window/control text: %v", err))
}
<-ret
}
// runs on uitask
func (s *sysData) setRect(x int, y int, width int, height int, winheight int) error {
r1, _, err := _moveWindow.Call(
uintptr(s.hwnd),
@ -283,84 +252,61 @@ func (s *sysData) setRect(x int, y int, width int, height int, winheight int) er
}
func (s *sysData) isChecked() bool {
ret := make(chan bool)
defer close(ret)
uitask <- func() {
r1, _, _ := _sendMessage.Call(
uintptr(s.hwnd),
uintptr(_BM_GETCHECK),
uintptr(0),
uintptr(0))
ret <- r1 == _BST_CHECKED
}
return <-ret
r1, _, _ := _sendMessage.Call(
uintptr(s.hwnd),
uintptr(_BM_GETCHECK),
uintptr(0),
uintptr(0))
return r1 == _BST_CHECKED
}
func (s *sysData) text() (str string) {
ret := make(chan string)
defer close(ret)
uitask <- func() {
var tc []uint16
var tc []uint16
r1, _, _ := _sendMessage.Call(
uintptr(s.hwnd),
uintptr(_WM_GETTEXTLENGTH),
uintptr(0),
uintptr(0))
length := r1 + 1 // terminating null
tc = make([]uint16, length)
_sendMessage.Call(
uintptr(s.hwnd),
uintptr(_WM_GETTEXT),
uintptr(_WPARAM(length)),
uintptr(_LPARAM(unsafe.Pointer(&tc[0]))))
ret <- syscall.UTF16ToString(tc)
}
return <-ret
r1, _, _ := _sendMessage.Call(
uintptr(s.hwnd),
uintptr(_WM_GETTEXTLENGTH),
uintptr(0),
uintptr(0))
length := r1 + 1 // terminating null
tc = make([]uint16, length)
_sendMessage.Call(
uintptr(s.hwnd),
uintptr(_WM_GETTEXT),
uintptr(_WPARAM(length)),
uintptr(_LPARAM(unsafe.Pointer(&tc[0]))))
return syscall.UTF16ToString(tc)
}
func (s *sysData) append(what string) {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
pwhat := toUTF16(what)
r1, _, err := _sendMessage.Call(
uintptr(s.hwnd),
uintptr(classTypes[s.ctype].appendMsg),
uintptr(_WPARAM(0)),
utf16ToLPARAM(pwhat))
if r1 == uintptr(classTypes[s.ctype].addSpaceErr) {
panic(fmt.Errorf("out of space adding item to combobox/listbox (last error: %v)", err))
} else if r1 == uintptr(classTypes[s.ctype].selectedIndexErr) {
panic(fmt.Errorf("failed to add item to combobox/listbox (last error: %v)", err))
}
ret <- struct{}{}
pwhat := toUTF16(what)
r1, _, err := _sendMessage.Call(
uintptr(s.hwnd),
uintptr(classTypes[s.ctype].appendMsg),
uintptr(_WPARAM(0)),
utf16ToLPARAM(pwhat))
if r1 == uintptr(classTypes[s.ctype].addSpaceErr) {
panic(fmt.Errorf("out of space adding item to combobox/listbox (last error: %v)", err))
} else if r1 == uintptr(classTypes[s.ctype].selectedIndexErr) {
panic(fmt.Errorf("failed to add item to combobox/listbox (last error: %v)", err))
}
<-ret
}
func (s *sysData) insertBefore(what string, index int) {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
pwhat := toUTF16(what)
r1, _, err := _sendMessage.Call(
uintptr(s.hwnd),
uintptr(classTypes[s.ctype].insertBeforeMsg),
uintptr(_WPARAM(index)),
utf16ToLPARAM(pwhat))
if r1 == uintptr(classTypes[s.ctype].addSpaceErr) {
panic(fmt.Errorf("out of space adding item to combobox/listbox (last error: %v)", err))
} else if r1 == uintptr(classTypes[s.ctype].selectedIndexErr) {
panic(fmt.Errorf("failed to add item to combobox/listbox (last error: %v)", err))
}
ret <- struct{}{}
pwhat := toUTF16(what)
r1, _, err := _sendMessage.Call(
uintptr(s.hwnd),
uintptr(classTypes[s.ctype].insertBeforeMsg),
uintptr(_WPARAM(index)),
utf16ToLPARAM(pwhat))
if r1 == uintptr(classTypes[s.ctype].addSpaceErr) {
panic(fmt.Errorf("out of space adding item to combobox/listbox (last error: %v)", err))
} else if r1 == uintptr(classTypes[s.ctype].selectedIndexErr) {
panic(fmt.Errorf("failed to add item to combobox/listbox (last error: %v)", err))
}
<-ret
}
// runs on uitask
func (s *sysData) doSelectedIndex() int {
func (s *sysData) selectedIndex() int {
r1, _, _ := _sendMessage.Call(
uintptr(s.hwnd),
uintptr(classTypes[s.ctype].selectedIndexMsg),
@ -372,19 +318,9 @@ func (s *sysData) doSelectedIndex() int {
return int(r1)
}
func (s *sysData) selectedIndex() int {
ret := make(chan int)
defer close(ret)
uitask <- func() {
ret <- s.doSelectedIndex()
}
return <-ret
}
// runs on uitask
func (s *sysData) doSelectedIndices() []int {
func (s *sysData) selectedIndices() []int {
if !s.alternate { // single-selection list box; use single-selection method
index := s.doSelectedIndex()
index := s.selectedIndex()
if index == -1 {
return nil
}
@ -414,107 +350,75 @@ func (s *sysData) doSelectedIndices() []int {
return indices
}
func (s *sysData) selectedIndices() []int {
ret := make(chan []int)
defer close(ret)
uitask <- func() {
ret <- s.doSelectedIndices()
}
return <-ret
}
func (s *sysData) selectedTexts() []string {
ret := make(chan []string)
defer close(ret)
uitask <- func() {
indices := s.doSelectedIndices()
strings := make([]string, len(indices))
for i, v := range indices {
r1, _, err := _sendMessage.Call(
uintptr(s.hwnd),
uintptr(_LB_GETTEXTLEN),
uintptr(_WPARAM(v)),
uintptr(0))
if r1 == negConst(_LB_ERR) {
panic(fmt.Errorf("error: LB_ERR from LB_GETTEXTLEN in what we know is a valid listbox index (came from LB_GETSELITEMS): %v", err))
}
str := make([]uint16, r1)
r1, _, err = _sendMessage.Call(
uintptr(s.hwnd),
uintptr(_LB_GETTEXT),
uintptr(_WPARAM(v)),
uintptr(_LPARAM(unsafe.Pointer(&str[0]))))
if r1 == negConst(_LB_ERR) {
panic(fmt.Errorf("error: LB_ERR from LB_GETTEXT in what we know is a valid listbox index (came from LB_GETSELITEMS): %v", err))
}
strings[i] = syscall.UTF16ToString(str)
indices := s.selectedIndices()
strings := make([]string, len(indices))
for i, v := range indices {
r1, _, err := _sendMessage.Call(
uintptr(s.hwnd),
uintptr(_LB_GETTEXTLEN),
uintptr(_WPARAM(v)),
uintptr(0))
if r1 == negConst(_LB_ERR) {
panic(fmt.Errorf("error: LB_ERR from LB_GETTEXTLEN in what we know is a valid listbox index (came from LB_GETSELITEMS): %v", err))
}
ret <- strings
str := make([]uint16, r1)
r1, _, err = _sendMessage.Call(
uintptr(s.hwnd),
uintptr(_LB_GETTEXT),
uintptr(_WPARAM(v)),
uintptr(_LPARAM(unsafe.Pointer(&str[0]))))
if r1 == negConst(_LB_ERR) {
panic(fmt.Errorf("error: LB_ERR from LB_GETTEXT in what we know is a valid listbox index (came from LB_GETSELITEMS): %v", err))
}
strings[i] = syscall.UTF16ToString(str)
}
return <-ret
return strings
}
func (s *sysData) setWindowSize(width int, height int) error {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
var rect _RECT
var rect _RECT
r1, _, err := _getClientRect.Call(
uintptr(s.hwnd),
uintptr(unsafe.Pointer(&rect)))
if r1 == 0 {
panic(fmt.Errorf("error getting upper-left of window for resize: %v", err))
}
// TODO AdjustWindowRect() on the result
// 0 because (0,0) is top-left so no winheight
err = s.setRect(int(rect.left), int(rect.top), width, height, 0)
if err != nil {
panic(fmt.Errorf("error actually resizing window: %v", err))
}
ret <- struct{}{}
r1, _, err := _getClientRect.Call(
uintptr(s.hwnd),
uintptr(unsafe.Pointer(&rect)))
if r1 == 0 {
panic(fmt.Errorf("error getting upper-left of window for resize: %v", err))
}
// TODO AdjustWindowRect() on the result
// 0 because (0,0) is top-left so no winheight
err = s.setRect(int(rect.left), int(rect.top), width, height, 0)
if err != nil {
panic(fmt.Errorf("error actually resizing window: %v", err))
}
<-ret
return nil
}
func (s *sysData) delete(index int) {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
r1, _, err := _sendMessage.Call(
uintptr(s.hwnd),
uintptr(classTypes[s.ctype].deleteMsg),
uintptr(_WPARAM(index)),
uintptr(0))
if r1 == uintptr(classTypes[s.ctype].selectedIndexErr) {
panic(fmt.Errorf("failed to delete item from combobox/listbox (last error: %v)", err))
}
ret <- struct{}{}
r1, _, err := _sendMessage.Call(
uintptr(s.hwnd),
uintptr(classTypes[s.ctype].deleteMsg),
uintptr(_WPARAM(index)),
uintptr(0))
if r1 == uintptr(classTypes[s.ctype].selectedIndexErr) {
panic(fmt.Errorf("failed to delete item from combobox/listbox (last error: %v)", err))
}
<-ret
}
func (s *sysData) setIndeterminate() {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
r1, _, err := _setWindowLongPtr.Call(
uintptr(s.hwnd),
negConst(_GWL_STYLE),
uintptr(classTypes[s.ctype].style | _PBS_MARQUEE))
if r1 == 0 {
panic(fmt.Errorf("error setting progress bar style to enter indeterminate mode: %v", err))
}
_sendMessage.Call(
uintptr(s.hwnd),
uintptr(_PBM_SETMARQUEE),
uintptr(_WPARAM(_TRUE)),
uintptr(0))
s.isMarquee = true
ret <- struct{}{}
r1, _, err := _setWindowLongPtr.Call(
uintptr(s.hwnd),
negConst(_GWL_STYLE),
uintptr(classTypes[s.ctype].style | _PBS_MARQUEE))
if r1 == 0 {
panic(fmt.Errorf("error setting progress bar style to enter indeterminate mode: %v", err))
}
<-ret
_sendMessage.Call(
uintptr(s.hwnd),
uintptr(_PBM_SETMARQUEE),
uintptr(_WPARAM(_TRUE)),
uintptr(0))
s.isMarquee = true
}
func (s *sysData) setProgress(percent int) {
@ -522,134 +426,100 @@ func (s *sysData) setProgress(percent int) {
s.setIndeterminate()
return
}
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
if s.isMarquee {
// turn off marquee before switching back
_sendMessage.Call(
uintptr(s.hwnd),
uintptr(_PBM_SETMARQUEE),
uintptr(_WPARAM(_FALSE)),
uintptr(0))
r1, _, err := _setWindowLongPtr.Call(
uintptr(s.hwnd),
negConst(_GWL_STYLE),
uintptr(classTypes[s.ctype].style))
if r1 == 0 {
panic(fmt.Errorf("error setting progress bar style to leave indeterminate mode (percent %d): %v", percent, err))
}
s.isMarquee = false
if s.isMarquee {
// turn off marquee before switching back
_sendMessage.Call(
uintptr(s.hwnd),
uintptr(_PBM_SETMARQUEE),
uintptr(_WPARAM(_FALSE)),
uintptr(0))
r1, _, err := _setWindowLongPtr.Call(
uintptr(s.hwnd),
negConst(_GWL_STYLE),
uintptr(classTypes[s.ctype].style))
if r1 == 0 {
panic(fmt.Errorf("error setting progress bar style to leave indeterminate mode (percent %d): %v", percent, err))
}
send := func(msg uintptr, n int, l _LPARAM) {
_sendMessage.Call(
uintptr(s.hwnd),
msg,
uintptr(_WPARAM(n)),
uintptr(l))
}
// Windows 7 has a non-disableable slowly-animating progress bar increment
// there isn't one for decrement, so we'll work around by going one higher and then lower again
// for the case where percent == 100, we need to increase the range temporarily
// sources: http://social.msdn.microsoft.com/Forums/en-US/61350dc7-6584-4c4e-91b0-69d642c03dae/progressbar-disable-smooth-animation http://stackoverflow.com/questions/2217688/windows-7-aero-theme-progress-bar-bug http://discuss.joelonsoftware.com/default.asp?dotnet.12.600456.2 http://stackoverflow.com/questions/22469876/progressbar-lag-when-setting-position-with-pbm-setpos http://stackoverflow.com/questions/6128287/tprogressbar-never-fills-up-all-the-way-seems-to-be-updating-too-fast
if percent == 100 {
send(_PBM_SETRANGE32, 0, 101)
}
send(_PBM_SETPOS, percent+1, 0)
send(_PBM_SETPOS, percent, 0)
if percent == 100 {
send(_PBM_SETRANGE32, 0, 100)
}
ret <- struct{}{}
s.isMarquee = false
}
send := func(msg uintptr, n int, l _LPARAM) {
_sendMessage.Call(
uintptr(s.hwnd),
msg,
uintptr(_WPARAM(n)),
uintptr(l))
}
// Windows 7 has a non-disableable slowly-animating progress bar increment
// there isn't one for decrement, so we'll work around by going one higher and then lower again
// for the case where percent == 100, we need to increase the range temporarily
// sources: http://social.msdn.microsoft.com/Forums/en-US/61350dc7-6584-4c4e-91b0-69d642c03dae/progressbar-disable-smooth-animation http://stackoverflow.com/questions/2217688/windows-7-aero-theme-progress-bar-bug http://discuss.joelonsoftware.com/default.asp?dotnet.12.600456.2 http://stackoverflow.com/questions/22469876/progressbar-lag-when-setting-position-with-pbm-setpos http://stackoverflow.com/questions/6128287/tprogressbar-never-fills-up-all-the-way-seems-to-be-updating-too-fast
if percent == 100 {
send(_PBM_SETRANGE32, 0, 101)
}
send(_PBM_SETPOS, percent+1, 0)
send(_PBM_SETPOS, percent, 0)
if percent == 100 {
send(_PBM_SETRANGE32, 0, 100)
}
<-ret
}
func (s *sysData) len() int {
ret := make(chan int)
defer close(ret)
uitask <- func() {
r1, _, err := _sendMessage.Call(
uintptr(s.hwnd),
uintptr(classTypes[s.ctype].lenMsg),
uintptr(_WPARAM(0)),
uintptr(_LPARAM(0)))
if r1 == uintptr(classTypes[s.ctype].selectedIndexErr) {
panic(fmt.Errorf("unexpected error return from sysData.len(); GetLastError() says %v", err))
}
ret <- int(r1)
r1, _, err := _sendMessage.Call(
uintptr(s.hwnd),
uintptr(classTypes[s.ctype].lenMsg),
uintptr(_WPARAM(0)),
uintptr(_LPARAM(0)))
if r1 == uintptr(classTypes[s.ctype].selectedIndexErr) {
panic(fmt.Errorf("unexpected error return from sysData.len(); GetLastError() says %v", err))
}
return <-ret
return int(r1)
}
func (s *sysData) setAreaSize(width int, height int) {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
_sendMessage.Call(
uintptr(s.hwnd),
uintptr(msgSetAreaSize),
uintptr(width), // WPARAM is UINT_PTR on Windows XP and newer at least, so we're good with this
uintptr(height))
ret <- struct{}{}
}
<-ret
_sendMessage.Call(
uintptr(s.hwnd),
uintptr(msgSetAreaSize),
uintptr(width), // WPARAM is UINT_PTR on Windows XP and newer at least, so we're good with this
uintptr(height))
}
func (s *sysData) repaintAll() {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
_sendMessage.Call(
uintptr(s.hwnd),
uintptr(msgRepaintAll),
uintptr(0),
uintptr(0))
ret <- struct{}{}
}
<-ret
_sendMessage.Call(
uintptr(s.hwnd),
uintptr(msgRepaintAll),
uintptr(0),
uintptr(0))
}
func (s *sysData) center() {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
var ws _RECT
var ws _RECT
r1, _, err := _getWindowRect.Call(
uintptr(s.hwnd),
uintptr(unsafe.Pointer(&ws)))
if r1 == 0 {
panic(fmt.Errorf("error getting window rect for sysData.center(): %v", err))
}
// TODO should this be using the monitor functions instead? http://blogs.msdn.com/b/oldnewthing/archive/2005/05/05/414910.aspx
// error returns from GetSystemMetrics() is meaningless because the return value, 0, is still valid
dw, _, _ := _getSystemMetrics.Call(uintptr(_SM_CXFULLSCREEN))
dh, _, _ := _getSystemMetrics.Call(uintptr(_SM_CYFULLSCREEN))
ww := ws.right - ws.left
wh := ws.bottom - ws.top
wx := (int32(dw) / 2) - (ww / 2)
wy := (int32(dh) / 2) - (wh / 2)
s.setRect(int(wx), int(wy), int(ww), int(wh), 0)
ret <- struct{}{}
r1, _, err := _getWindowRect.Call(
uintptr(s.hwnd),
uintptr(unsafe.Pointer(&ws)))
if r1 == 0 {
panic(fmt.Errorf("error getting window rect for sysData.center(): %v", err))
}
<-ret
// TODO should this be using the monitor functions instead? http://blogs.msdn.com/b/oldnewthing/archive/2005/05/05/414910.aspx
// error returns from GetSystemMetrics() is meaningless because the return value, 0, is still valid
// TODO should this be using the client rect and not the window rect?
dw, _, _ := _getSystemMetrics.Call(uintptr(_SM_CXFULLSCREEN))
dh, _, _ := _getSystemMetrics.Call(uintptr(_SM_CYFULLSCREEN))
ww := ws.right - ws.left
wh := ws.bottom - ws.top
wx := (int32(dw) / 2) - (ww / 2)
wy := (int32(dh) / 2) - (wh / 2)
s.setRect(int(wx), int(wy), int(ww), int(wh), 0)
}
func (s *sysData) setChecked(checked bool) {
ret := make(chan struct{})
defer close(ret)
uitask <- func() {
c := uintptr(_BST_CHECKED)
if !checked {
c = uintptr(_BST_UNCHECKED)
}
_sendMessage.Call(
uintptr(s.hwnd),
uintptr(_BM_SETCHECK),
c,
uintptr(0))
ret <- struct{}{}
c := uintptr(_BST_CHECKED)
if !checked {
c = uintptr(_BST_UNCHECKED)
}
<-ret
_sendMessage.Call(
uintptr(s.hwnd),
uintptr(_BM_SETCHECK),
c,
uintptr(0))
}

12
test/kbtest.go
View File

@ -73,13 +73,19 @@ func (a *keyboardArea) Key(e KeyEvent) (repaint bool) {
return true
}
type kbhandler struct{}
func (kbhandler) Event(e Event, d interface{}) {
if e == Closing {
*(d.(*bool)) = true
}
}
var doKeyboard = flag.Bool("kb", false, "run keyboard test (overrides -areabounds)")
func kbTest() {
wid, ht, ah := mkkbArea()
a := NewArea(wid, ht, ah)
w := NewWindow("Hi", wid, ht)
w := NewWindow("Hi", wid, ht, kbhandler{})
w.Open(a)
<-w.Closing
}
var (
@ -213,6 +219,8 @@ var modpoints = map[Modifiers]image.Point{
Super: image.Pt(61, 199),
}
// TODO move the following to its own file
// source: http://openclipart.org/image/800px/svg_to_png/154537/1312973798.png (medium image) via http://openclipart.org/detail/154537/us-english-keyboard-layout-v0.1-by-nitiraseem
var kbpic = []byte{
0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d,

361
test/main.go
View File

@ -15,18 +15,21 @@ import (
. "github.com/andlabs/ui"
)
type nullwinhandler struct{}
func (nullwinhandler) Event(Event, interface{}) {}
var prefsizetest = flag.Bool("prefsize", false, "")
func listboxPreferredSizeTest() *Window {
lb := NewListbox("xxxxx", "y", "zzz")
g := NewGrid(1, lb)
w := NewWindow("Listbox Preferred Size Test", 300, 300)
w := NewWindow("Listbox Preferred Size Test", 300, 300, nullwinhandler{})
w.Open(g)
return w
}
var gridtest = flag.Bool("grid", false, "")
func gridWindow() *Window {
w := NewWindow("Grid Test", 400, 400)
w := NewWindow("Grid Test", 400, 400, nullwinhandler{})
b00 := NewButton("0,0")
b01 := NewButton("0,1")
b02 := NewButton("0,2")
@ -44,10 +47,11 @@ func gridWindow() *Window {
g.SetStretchy(1, 1)
w.SetSpaced(*spacingTest)
w.Open(g)
go func() {for {select {
case <-b12.Clicked:
c21.SetChecked(!c21.Checked())
}}}()
//TODO
// go func() {for {select {
// case <-b12.Clicked:
// c21.SetChecked(!c21.Checked())
// }}}()
return w
}
@ -205,7 +209,6 @@ func areaTest() {
}
img := image.NewRGBA(ximg.Bounds())
draw.Draw(img, img.Rect, ximg, image.ZP, draw.Over)
w := NewWindow("Area Test", 100, 100)
areahandler := &areaHandler{
img: img,
}
@ -229,24 +232,54 @@ func areaTest() {
timedisp,
sizeStack)
layout.SetStretchy(0)
w := NewWindow("Area Test", 100, 100, &areatestwinhandler{
areahandler: areahandler,
a: a,
timedisp: timedisp,
widthbox: widthbox,
heightbox: heightbox,
resize: resize,
modaltest: modaltest,
repainttest: repainttest,
})
w.Open(layout)
for {
select {
case <-w.Closing:
return
case t := <-timechan:
timedisp.SetText(t.String())
case <-resize.Clicked:
width, err := strconv.Atoi(widthbox.Text())
if err != nil { println(err); continue }
height, err := strconv.Atoi(heightbox.Text())
if err != nil { println(err); continue }
a.SetSize(width, height)
case <-modaltest.Clicked:
go func() {
for t := range timechan {
// TODO
_ = t
// timedisp.SetText(t.String())
}
}()
}
type areatestwinhandler struct {
areahandler *areaHandler
a *Area
timedisp *Label
widthbox *LineEdit
heightbox *LineEdit
resize *Button
modaltest *Button
repainttest *Button
}
func (a *areatestwinhandler) Event(e Event, d interface{}) {
switch e {
case Closing:
*(d.(*bool)) = true
Stop <- struct{}{}
case Clicked:
switch d {
case a.resize:
width, err := strconv.Atoi(a.widthbox.Text())
if err != nil { println(err); return }
height, err := strconv.Atoi(a.heightbox.Text())
if err != nil { println(err); return }
a.a.SetSize(width, height)
case a.modaltest:
MsgBox("Modal Test", "")
case <-repainttest.Clicked:
areahandler.mutate()
a.RepaintAll()
case a.repainttest:
a.areahandler.mutate()
a.a.RepaintAll()
}
}
}
@ -275,9 +308,10 @@ func areaboundsTest() {
// middle purple
r.Min.Y++
draw.Draw(img, r, u(128, 0, 128), image.ZP, draw.Over)
w := NewWindow("Area Bounds Test", 320, 240)
w := NewWindow("Area Bounds Test", 320, 240, &areatestwinhandler{
a: a,
})
w.Open(a)
<-w.Closing
}
var dialogTest = flag.Bool("dialog", false, "add Window.MsgBox() channel test window")
@ -285,6 +319,7 @@ var labelAlignTest = flag.Bool("label", false, "show Label Alignment test window
var spacingTest = flag.Bool("spacing", false, "margins and padding on Window")
func myMain() {
<-Ready
if *spacetest != "" {
spaceTest()
return
@ -301,58 +336,88 @@ func myMain() {
areaboundsTest()
return
}
w := NewWindow("Main Window", 320, 240)
b := NewButton("Click Me")
b2 := NewButton("Or Me")
bmsg := NewButton("Or Even Me!")
s2 := NewHorizontalStack(b, b2, bmsg)
runMainTest()
}
type testwinhandler struct {
w *Window
b *Button
b2 *Button
bmsg *Button
c *Checkbox
cb1 *Combobox
cb2 *Combobox
e *LineEdit
l *Label
resetl func()
b3 *Button
pbar *ProgressBar
prog int
incButton *Button
decButton *Button
indetButton *Button
invalidButton *Button
password *LineEdit
lb1 *Listbox
lb2 *Listbox
i int
doAdjustments func()
}
func runMainTest() {
handler := new(testwinhandler)
handler.w = NewWindow("Main Window", 320, 240, handler)
handler.b = NewButton("Click Me")
handler.b2 = NewButton("Or Me")
handler.bmsg = NewButton("Or Even Me!")
s2 := NewHorizontalStack(handler.b, handler.b2, handler.bmsg)
s2.SetStretchy(2)
c := NewCheckbox("Check Me")
cb1 := NewEditableCombobox("You can edit me!", "Yes you can!", "Yes you will!")
cb2 := NewCombobox("You can't edit me!", "No you can't!", "No you won't!")
e := NewLineEdit("Enter text here too")
l := NewLabel("This is a label")
resetl := func() {
l.SetText("This is a label")
handler.c = NewCheckbox("Check Me")
handler.cb1 = NewEditableCombobox("You can edit me!", "Yes you can!", "Yes you will!")
handler.cb2 = NewCombobox("You can't edit me!", "No you can't!", "No you won't!")
handler.e = NewLineEdit("Enter text here too")
handler.l = NewLabel("This is a label")
handler.resetl = func() {
handler.l.SetText("This is a label")
}
b3 := NewButton("List Info")
s3 := NewHorizontalStack(l, b3)
handler.b3 = NewButton("List Info")
s3 := NewHorizontalStack(handler.l, handler.b3)
s3.SetStretchy(0)
// s3.SetStretchy(1)
pbar := NewProgressBar()
prog := 0
incButton := NewButton("Inc")
decButton := NewButton("Dec")
indetButton := NewButton("Indeterminate")
invalidButton := NewButton("Run Invalid Test")
sincdec := NewHorizontalStack(incButton, decButton, indetButton, invalidButton)
password := NewPasswordEdit()
s0 := NewVerticalStack(s2, c, cb1, cb2, e, s3, pbar, sincdec, Space(), password)
handler.pbar = NewProgressBar()
handler.prog = 0
handler.incButton = NewButton("Inc")
handler.decButton = NewButton("Dec")
handler.indetButton = NewButton("Indeterminate")
handler.invalidButton = NewButton("Run Invalid Test")
sincdec := NewHorizontalStack(handler.incButton, handler.decButton, handler.indetButton, handler.invalidButton)
handler.password = NewPasswordEdit()
s0 := NewVerticalStack(s2, handler.c, handler.cb1, handler.cb2, handler.e, s3, handler.pbar, sincdec, Space(), handler.password)
s0.SetStretchy(8)
lb1 := NewMultiSelListbox("Select One", "Or More", "To Continue")
lb2 := NewListbox("Select", "Only", "One", "Please")
i := 0
doAdjustments := func() {
cb1.Append("append")
cb2.InsertBefore(fmt.Sprintf("before %d", i), 1)
lb1.InsertBefore(fmt.Sprintf("%d", i), 2)
lb2.Append("Please")
i++
handler.lb1 = NewMultiSelListbox("Select One", "Or More", "To Continue")
handler.lb2 = NewListbox("Select", "Only", "One", "Please")
handler.i = 0
handler.doAdjustments = func() {
handler.cb1.Append("append")
handler.cb2.InsertBefore(fmt.Sprintf("before %d", handler.i), 1)
handler.lb1.InsertBefore(fmt.Sprintf("%d", handler.i), 2)
handler.lb2.Append("Please")
handler.i++
}
doAdjustments()
cb1.Append("append multi 1", "append multi 2")
lb2.Append("append multi 1", "append multi 2")
s1 := NewVerticalStack(lb2, lb1)
handler.doAdjustments()
handler.cb1.Append("append multi 1", "append multi 2")
handler.lb2.Append("append multi 1", "append multi 2")
s1 := NewVerticalStack(handler.lb2, handler.lb1)
s1.SetStretchy(0)
s1.SetStretchy(1)
s := NewHorizontalStack(s1, s0)
s.SetStretchy(0)
s.SetStretchy(1)
if *invalidBefore {
invalidTest(cb1, lb1, s, NewGrid(1, Space()))
invalidTest(handler.cb1, handler.lb1, s, NewGrid(1, Space()))
}
w.SetSpaced(*spacingTest)
w.Open(s)
handler.w.SetSpaced(*spacingTest)
handler.w.Open(s)
if *gridtest {
gridWindow()
}
@ -360,12 +425,17 @@ func myMain() {
listboxPreferredSizeTest()
}
ticker := time.Tick(time.Second)
// == TODO ==
dialog_bMsgBox := NewButton("MsgBox()")
dialog_bMsgBoxError := NewButton("MsgBoxError()")
centerButton := NewButton("Center")
dialog_win := NewWindow("Dialogs", 200, 200)
dh := &dialoghandler{
bMsgBox: dialog_bMsgBox,
bMsgBoxError: dialog_bMsgBoxError,
bCenter: centerButton,
// send: w.Send,
}
dh.w = NewWindow("Dialogs", 200, 200, dh)
if *dialogTest {
s := NewVerticalStack(
dialog_bMsgBox,
@ -373,11 +443,9 @@ func myMain() {
Space(),
centerButton)
s.SetStretchy(2)
dialog_win.Open(s)
dh.w.Open(s)
}
var dialog_sret chan struct{} = nil
if *labelAlignTest {
s := NewHorizontalStack(NewStandaloneLabel("Label"), NewLineEdit("Label"))
s.SetStretchy(1)
@ -407,99 +475,116 @@ func myMain() {
NewButton("Button"),
s)
s.SetStretchy(4)
NewWindow("Label Align Test", 500, 300).Open(s)
NewWindow("Label Align Test", 500, 300, nullwinhandler{}).Open(s)
}
}
mainloop:
for {
select {
case curtime := <-ticker:
// l.SetText(curtime.String())
_=curtime
case <-w.Closing:
println("window closed event received")
break mainloop
case <-AppQuit:
println("application quit event received")
break mainloop
case <-b.Clicked:
w.SetTitle(fmt.Sprintf("%v | %s | %s | %s | %s",
c.Checked(),
cb1.Selection(),
cb2.Selection(),
e.Text(),
password.Text()))
doAdjustments()
case <-b2.Clicked:
if cb1.Len() > 1 {
cb1.Delete(1)
func (handler *testwinhandler) Event(e Event, d interface{}) {
switch e {
case Closing:
println("window closed event received")
Stop <- struct{}{}
case Clicked:
switch d {
case handler.b:
handler.w.SetTitle(fmt.Sprintf("%v | %s | %s | %s | %s",
handler.c.Checked(),
handler.cb1.Selection(),
handler.cb2.Selection(),
handler.e.Text(),
handler.password.Text()))
handler.doAdjustments()
case handler.b2:
if handler.cb1.Len() > 1 {
handler.cb1.Delete(1)
}
if cb2.Len() > 2 {
cb2.Delete(2)
if handler.cb2.Len() > 2 {
handler.cb2.Delete(2)
}
if lb1.Len() > 3 || *macCrashTest {
lb1.Delete(3)
if handler.lb1.Len() > 3 || *macCrashTest {
handler.lb1.Delete(3)
}
if lb2.Len() > 4 {
lb2.Delete(4)
if handler.lb2.Len() > 4 {
handler.lb2.Delete(4)
}
case <-b3.Clicked:
case handler.b3:
f := MsgBox
if c.Checked() {
if handler.c.Checked() {
f = MsgBoxError
}
f("List Info",
fmt.Sprintf("cb1: %d %q (len %d)\ncb2: %d %q (len %d)\nlb1: %d %q (len %d)\nlb2: %d %q (len %d)",
cb1.SelectedIndex(), cb1.Selection(), cb1.Len(),
cb2.SelectedIndex(), cb2.Selection(), cb2.Len(),
lb1.SelectedIndices(), lb1.Selection(), lb1.Len(),
lb2.SelectedIndices(), lb2.Selection(), lb2.Len()))
case <-incButton.Clicked:
prog++
if prog > 100 {
prog = 100
handler.cb1.SelectedIndex(), handler.cb1.Selection(), handler.cb1.Len(),
handler.cb2.SelectedIndex(), handler.cb2.Selection(), handler.cb2.Len(),
handler.lb1.SelectedIndices(), handler.lb1.Selection(), handler.lb1.Len(),
handler.lb2.SelectedIndices(), handler.lb2.Selection(), handler.lb2.Len()))
case handler.incButton:
handler.prog++
if handler.prog > 100 {
handler.prog = 100
}
pbar.SetProgress(prog)
cb1.Append("append multi 1", "append multi 2")
lb2.Append("append multi 1", "append multi 2")
case <-decButton.Clicked:
prog--
if prog < 0 {
prog = 0
handler.pbar.SetProgress(handler.prog)
handler.cb1.Append("append multi 1", "append multi 2")
handler.lb2.Append("append multi 1", "append multi 2")
case handler.decButton:
handler.prog--
if handler.prog < 0 {
handler.prog = 0
}
pbar.SetProgress(prog)
case <-indetButton.Clicked:
pbar.SetProgress(-1)
case <-invalidButton.Clicked:
invalidTest(cb1, lb1, nil, nil)
case <-bmsg.Clicked:
handler.pbar.SetProgress(handler.prog)
case handler.indetButton:
handler.pbar.SetProgress(-1)
case handler.invalidButton:
invalidTest(handler.cb1, handler.lb1, nil, nil)
case handler.bmsg:
MsgBox("Title Only, no parent", "")
MsgBox("Title and Text", "parent")
// dialogs
case <-dialog_bMsgBox.Clicked:
dialog_sret = dialog_win.MsgBox("Message Box", "Dismiss")
l.SetText("DIALOG")
case <-dialog_bMsgBoxError.Clicked:
dialog_sret = dialog_win.MsgBoxError("Message Box", "Dismiss")
l.SetText("DIALOG")
case <-dialog_sret:
dialog_sret = nil
resetl()
case <-centerButton.Clicked:
dialog_win.Center()
handler.w.MsgBox("Title and Text", "parent")
}
// == TODO ==
// case CusotmEvent:
// l.SetText("DIALOG")
// case CustomEvent + 1:
// resetl()
}
}
type dialoghandler struct {
bMsgBox *Button
bMsgBoxError *Button
w *Window
bCenter *Button
send func(Event, interface{})
}
// == TODO ==
func (handler *dialoghandler) Event(e Event, d interface{}) {
if e == Clicked {
switch d {
case handler.bMsgBox:
// handler.send(CustomEvent, "DIALOG")
handler.w.MsgBox("Message Box", "Dismiss")
// handler.send(CustomEvent, nil)
case handler.bMsgBoxError:
// handler.send(CustomEvent, "DIALOG")
handler.w.MsgBoxError("Message Box", "Dismiss")
// handler.send(CustomEvent, nil)
case handler.bCenter:
handler.w.Center()
}
}
w.Hide()
}
func main() {
flag.Parse()
err := Go(myMain)
go myMain()
err := Go()
if err != nil {
panic(err)
}
}
// TODO move to its own file
// source: https://upload.wikimedia.org/wikipedia/commons/0/06/Regensburg-donaulaende-warp-enhanced_1-320x240.jpg via https://commons.wikimedia.org/wiki/File:Regensburg-donaulaende-warp-enhanced_1-320x240.jpg (thanks Sofi)
// converted to png with imagemagick because the JPG was throwing up an error about incomplete Huffman data (TODO)
var imagedata = []byte{

5
test/spacing.go
View File

@ -41,14 +41,13 @@ func spaceTest() {
a2 := NewArea(w, h, ah)
a3 := NewArea(w, h, ah)
a4 := NewArea(w, h, ah)
win := NewWindow("Stack", 250, 250)
win := NewWindow("Stack", 250, 250, nullwinhandler{})
win.SetSpaced(true)
win.Open(f(a1, a2))
win = NewWindow("Grid", 250, 250)
win = NewWindow("Grid", 250, 250, nullwinhandler{})
win.SetSpaced(true)
g := NewGrid(ng, a3, a4)
g.SetFilling(0, 0)
g.SetStretchy(gsx, gsy)
win.Open(g)
select {}
}

30
uitask_darwin.go
View File

@ -4,7 +4,6 @@ package ui
import (
"fmt"
"runtime"
"unsafe"
)
@ -16,32 +15,31 @@ import "C"
var uitask chan func()
func ui(main func()) error {
runtime.LockOSThread()
uitask = make(chan func())
func uiinit() error {
err := initCocoa()
if err != nil {
return err
}
// do this at the end in case something goes wrong
uitask = make(chan func())
return nil
}
func ui() {
// Cocoa must run on the first thread created by the program, so we run our dispatcher on another thread instead
go func() {
for f := range uitask {
C.douitask(appDelegate, unsafe.Pointer(&f))
}
}()
go func() {
main()
uitask <- func() {
C.breakMainLoop()
for {
select {
case f := <-uitask:
C.douitask(appDelegate, unsafe.Pointer(&f))
case <-Stop:
C.breakMainLoop()
}
}
}()
C.cocoaMainLoop()
return nil
}
func initCocoa() (err error) {

30
uitask_unix.go
View File

@ -6,7 +6,6 @@ package ui
import (
"fmt"
"runtime"
)
// #cgo pkg-config: gtk+-3.0
@ -15,19 +14,32 @@ import "C"
var uitask chan func()
func ui(main func()) error {
runtime.LockOSThread()
uitask = make(chan func())
func uiinit() error {
err := gtk_init()
if err != nil {
return fmt.Errorf("gtk_init() failed: %v", err)
}
// do this only on success, just to be safe
uitask = make(chan func())
return nil
}
func ui() {
// thanks to tristan and Daniel_S in irc.gimp.net/#gtk
// see our_idle_callback in callbacks_unix.go for details
go func() {
for f := range uitask {
for {
var f func()
select {
case f = <-uitask:
// do nothing
case <-Stop:
f = func() {
C.gtk_main_quit()
}
}
done := make(chan struct{})
gdk_threads_add_idle(&gtkIdleOp{
what: f,
@ -38,11 +50,5 @@ func ui(main func()) error {
}
}()
go func() {
main()
uitask <- gtk_main_quit
}()
C.gtk_main()
return nil
}

53
uitask_windows.go
View File

@ -4,7 +4,6 @@ package ui
import (
"fmt"
"runtime"
"syscall"
"unsafe"
)
@ -46,47 +45,51 @@ var (
_postMessage = user32.NewProc("PostMessageW")
)
func ui(main func()) error {
runtime.LockOSThread()
var msghwnd _HWND
uitask = make(chan interface{})
func uiinit() error {
err := doWindowsInit()
if err != nil {
return fmt.Errorf("error doing general Windows initialization: %v", err)
}
hwnd, err := makeMessageHandler()
msghwnd, err = makeMessageHandler()
if err != nil {
return fmt.Errorf("error making invisible window for handling events: %v", err)
}
// do this only on success just to be safe
uitask = make(chan interface{})
return nil
}
func ui() {
go func() {
for m := range uitask {
r1, _, err := _postMessage.Call(
uintptr(hwnd),
msgRequested,
uintptr(0),
for {
select {
case m := <-uitask:
r1, _, err := _postMessage.Call(
uintptr(msghwnd),
msgRequested,
uintptr(0),
uintptr(unsafe.Pointer(&m)))
if r1 == 0 { // failure
panic("error sending message to message loop to call function: " + err.Error())
if r1 == 0 { // failure
panic("error sending message to message loop to call function: " + err.Error())
}
case <-Stop:
r1, _, err := _postMessage.Call(
uintptr(msghwnd),
msgQuit,
uintptr(0),
uintptr(0))
if r1 == 0 { // failure
panic("error sending quit message to message loop: " + err.Error())
}
}
}
}()
go func() {
main()
r1, _, err := _postMessage.Call(
uintptr(hwnd),
msgQuit,
uintptr(0),
uintptr(0))
if r1 == 0 { // failure
panic("error sending quit message to message loop: " + err.Error())
}
}()
msgloop()
return nil
}
var (

110
window.go
View File

@ -4,17 +4,10 @@ package ui
import (
"fmt"
"sync"
)
// Window represents an on-screen window.
type Window struct {
// Closing gets a message when the user clicks the window's close button.
// You cannot change it once the Window has been created.
// If you do not respond to this signal, nothing will happen; regardless of whether you handle the signal or not, the window will not be closed.
Closing chan struct{}
lock sync.Mutex
created bool
sysData *sysData
initTitle string
@ -22,24 +15,44 @@ type Window struct {
initHeight int
shownOnce bool
spaced bool
handler WindowHandler
}
// WindowHandler represents an event handler for a Window and all its child Controls.
//
// When an event on a Window or one of its child Controls comes in, the respect Window's handler's Event() method is called. The method call occurs on the main thread, and thus any call to any package ui method can be performed.
//
// Each Event() call takes two parameters: the event ID and a data argument. For most events, the data argument is a pointer to the Control that triggered the event.
//
// For Closing, the data argument is a pointer to a bool variable. If, after returning from Event, the value of this variable is true, the Window is closed; if false, the Window is not closed. The default value on entry to the function is [TODO].
//
// For any event >= CustomEvent, the data argument is the argument passed to the Window's SendEvent() method.
type WindowHandler interface {
Event(e Event, data interface{})
}
// Event represents an event; see WindowHandler for details.
// All event values >= CustomEvent are available for program use.
type Event int
const (
Closing Event = iota // Window close
Clicked // Button click
CustomEvent = 5000 // very high number; higher than the package would ever need, anyway
)
// NewWindow allocates a new Window with the given title and size. The window is not created until a call to Create() or Open().
func NewWindow(title string, width int, height int) *Window {
func NewWindow(title string, width int, height int, handler WindowHandler) *Window {
return &Window{
sysData: mksysdata(c_window),
initTitle: title,
initWidth: width,
initHeight: height,
Closing: newEvent(),
handler: handler,
}
}
// SetTitle sets the window's title.
func (w *Window) SetTitle(title string) {
w.lock.Lock()
defer w.lock.Unlock()
if w.created {
w.sysData.setText(title)
return
@ -49,9 +62,6 @@ func (w *Window) SetTitle(title string) {
// SetSize sets the window's size.
func (w *Window) SetSize(width int, height int) (err error) {
w.lock.Lock()
defer w.lock.Unlock()
if w.created {
err := w.sysData.setWindowSize(width, height)
if err != nil {
@ -70,9 +80,6 @@ func (w *Window) SetSize(width int, height int) (err error) {
// This property is visible recursively throughout the widget hierarchy of the Window.
// This property cannot be set after the Window has been created.
func (w *Window) SetSpaced(spaced bool) {
w.lock.Lock()
defer w.lock.Unlock()
if w.created {
panic(fmt.Errorf("Window.SetSpaced() called after window created"))
}
@ -81,44 +88,49 @@ func (w *Window) SetSpaced(spaced bool) {
// Open creates the Window with Create and then shows the Window with Show. As with Create, you cannot call Open more than once per window.
func (w *Window) Open(control Control) {
w.Create(control)
w.Show()
w.create(control, true)
}
// Create creates the Window, setting its control to the given control. It does not show the window. This can only be called once per window, and finalizes all initialization of the control.
func (w *Window) Create(control Control) {
w.lock.Lock()
defer w.lock.Unlock()
w.create(control, false)
}
if w.created {
panic("window already open")
}
w.sysData.spaced = w.spaced
w.sysData.event = w.Closing
err := w.sysData.make(nil)
if err != nil {
panic(fmt.Errorf("error opening window: %v", err))
}
if control != nil {
w.sysData.allocate = control.allocate
err = control.make(w.sysData)
if err != nil {
panic(fmt.Errorf("error adding window's control: %v", err))
func (w *Window) create(control Control, show bool) {
touitask(func() {
if w.created {
panic("window already open")
}
}
err = w.sysData.setWindowSize(w.initWidth, w.initHeight)
if err != nil {
panic(fmt.Errorf("error setting window size (in Window.Open()): %v", err))
}
w.sysData.setText(w.initTitle)
w.created = true
w.sysData.spaced = w.spaced
w.sysData.winhandler = w.handler
w.sysData.close = func(b *bool) {
w.sysData.winhandler.Event(Closing, b)
}
err := w.sysData.make(nil)
if err != nil {
panic(fmt.Errorf("error opening window: %v", err))
}
if control != nil {
w.sysData.allocate = control.allocate
err = control.make(w.sysData)
if err != nil {
panic(fmt.Errorf("error adding window's control: %v", err))
}
}
err = w.sysData.setWindowSize(w.initWidth, w.initHeight)
if err != nil {
panic(fmt.Errorf("error setting window size (in Window.Open()): %v", err))
}
w.sysData.setText(w.initTitle)
w.created = true
if show {
w.Show()
}
})
}
// Show shows the window.
func (w *Window) Show() {
w.lock.Lock()
defer w.lock.Unlock()
if !w.shownOnce {
w.shownOnce = true
err := w.sysData.firstShow()
@ -132,9 +144,6 @@ func (w *Window) Show() {
// Hide hides the window.
func (w *Window) Hide() {
w.lock.Lock()
defer w.lock.Unlock()
w.sysData.hide()
}
@ -142,9 +151,6 @@ func (w *Window) Hide() {
// The concept of "screen" in the case of a multi-monitor setup is implementation-defined.
// It presently panics if the Window has not been created.
func (w *Window) Center() {
w.lock.Lock()
defer w.lock.Unlock()
if !w.created {
panic("attempt to center Window before it has been created")
}

1
zconstants_windows_386.go
View File

@ -35,6 +35,7 @@ const _FALSE = 0
const _GWLP_USERDATA = -21
const _GWL_STYLE = -16
const _ICC_PROGRESS_CLASS = 32
const _IDOK = 1
const _LBS_EXTENDEDSEL = 2048
const _LBS_NOINTEGRALHEIGHT = 256
const _LBS_NOTIFY = 1

1
zconstants_windows_amd64.go
View File

@ -35,6 +35,7 @@ const _FALSE = 0
const _GWLP_USERDATA = -21
const _GWL_STYLE = -16
const _ICC_PROGRESS_CLASS = 32
const _IDOK = 1
const _LBS_EXTENDEDSEL = 2048
const _LBS_NOINTEGRALHEIGHT = 256
const _LBS_NOTIFY = 1