131 lines
3.6 KiB
Go
131 lines
3.6 KiB
Go
// 28 july 2014
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package ui
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import (
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"fmt"
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"unsafe"
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"reflect"
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)
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// #include "winapi_windows.h"
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import "C"
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type table struct {
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*tablebase
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_hwnd C.HWND
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noautosize bool
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colcount C.int
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}
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func finishNewTable(b *tablebase, ty reflect.Type) Table {
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t := &table{
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_hwnd: C.newControl(C.xWC_LISTVIEW,
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C.LVS_REPORT | C.LVS_OWNERDATA | C.LVS_NOSORTHEADER | C.LVS_SHOWSELALWAYS | C.WS_HSCROLL | C.WS_VSCROLL | C.WS_TABSTOP,
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C.WS_EX_CLIENTEDGE), // WS_EX_CLIENTEDGE without WS_BORDER will show the canonical visual styles border (thanks to MindChild in irc.efnet.net/#winprog)
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tablebase: b,
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}
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C.setTableSubclass(t._hwnd, unsafe.Pointer(t))
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// LVS_EX_FULLROWSELECT gives us selection across the whole row, not just the leftmost column; this makes the list view work like on other platforms
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// LVS_EX_SUBITEMIMAGES gives us images in subitems, which will be important when both images and checkboxes are added
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C.tableAddExtendedStyles(t._hwnd, C.LVS_EX_FULLROWSELECT | C.LVS_EX_SUBITEMIMAGES)
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for i := 0; i < ty.NumField(); i++ {
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C.tableAppendColumn(t._hwnd, C.int(i), toUTF16(ty.Field(i).Name))
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}
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t.colcount = C.int(ty.NumField())
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return t
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}
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func (t *table) Unlock() {
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t.unlock()
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// there's a possibility that user actions can happen at this point, before the view is updated
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// alas, this is something we have to deal with, because Unlock() can be called from any thread
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go func() {
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Do(func() {
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t.RLock()
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defer t.RUnlock()
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C.tableUpdate(t._hwnd, C.int(reflect.Indirect(reflect.ValueOf(t.data)).Len()))
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})
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}()
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}
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func (t *table) LoadImageList(il ImageList) {
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il.apply(t._hwnd, C.LVM_SETIMAGELIST, C.LVSIL_SMALL)
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}
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//export tableGetCell
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func tableGetCell(data unsafe.Pointer, item *C.LVITEMW) {
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t := (*table)(data)
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t.RLock()
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defer t.RUnlock()
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d := reflect.Indirect(reflect.ValueOf(t.data))
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datum := d.Index(int(item.iItem)).Field(int(item.iSubItem))
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switch d := datum.Interface().(type) {
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case ImageIndex:
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item.mask |= C.LVIF_IMAGE
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item.mask &^= C.LVIF_TEXT
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item.iImage = C.int(d)
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default:
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item.mask |= C.LVIF_TEXT
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item.mask &^= C.LVIF_IMAGE
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s := fmt.Sprintf("%v", datum)
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item.pszText = toUTF16(s)
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}
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}
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// the column autoresize policy is simple:
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// on every table.commitResize() call, if the columns have not been resized by the user, autoresize
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func (t *table) autoresize() {
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t.RLock()
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defer t.RUnlock()
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if !t.noautosize {
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C.tableAutosizeColumns(t._hwnd, t.colcount)
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}
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}
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//export tableStopColumnAutosize
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func tableStopColumnAutosize(data unsafe.Pointer) {
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t := (*table)(data)
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t.noautosize = true
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}
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//export tableColumnCount
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func tableColumnCount(data unsafe.Pointer) C.int {
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t := (*table)(data)
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return t.colcount
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}
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func (t *table) hwnd() C.HWND {
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return t._hwnd
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}
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func (t *table) setParent(p *controlParent) {
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basesetParent(t, p)
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}
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func (t *table) allocate(x int, y int, width int, height int, d *sizing) []*allocation {
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return baseallocate(t, x, y, width, height, d)
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}
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const (
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// from C++ Template 05 in http://msdn.microsoft.com/en-us/library/windows/desktop/bb226818%28v=vs.85%29.aspx as this is the best I can do for now
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// there IS a message LVM_APPROXIMATEVIEWRECT that can do calculations, but it doesn't seem to work right when asked to base its calculations on the current width/height on Windows and wine...
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tableWidth = 183
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tableHeight = 50
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)
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func (t *table) preferredSize(d *sizing) (width, height int) {
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return fromdlgunitsX(tableWidth, d), fromdlgunitsY(tableHeight, d)
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}
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func (t *table) commitResize(a *allocation, d *sizing) {
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basecommitResize(t, a, d)
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t.RLock()
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defer t.RUnlock()
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t.autoresize()
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}
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func (t *table) getAuxResizeInfo(d *sizing) {
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basegetAuxResizeInfo(t, d)
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}
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