63 lines
1.4 KiB
Go
63 lines
1.4 KiB
Go
// 4 august 2014
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package ui
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// TODO clean this up relative to window_windows.go
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import (
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"fmt"
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"unsafe"
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)
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// #include "winapi_windows.h"
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import "C"
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type layout struct {
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hwnd C.HWND
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closing *event
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*sizer
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}
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func newLayout(title string, width int, height int, child C.BOOL, control Control) *layout {
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l := &layout{
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// hwnd set in WM_CREATE handler
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closing: newEvent(),
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sizer: new(sizer),
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}
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hwnd := C.newWindow(toUTF16(title), C.int(width), C.int(height), child, unsafe.Pointer(l))
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if hwnd != l.hwnd {
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panic(fmt.Errorf("inconsistency: hwnd returned by CreateWindowEx() (%p) and hwnd stored in window/layout (%p) differ", hwnd, l.hwnd))
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}
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l.child = control
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l.child.setParent(&controlParent{l.hwnd})
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return l
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}
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func (l *layout) setParent(p *controlParent) {
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C.controlSetParent(l.hwnd, p.hwnd)
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}
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//export storeWindowHWND
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func storeWindowHWND(data unsafe.Pointer, hwnd C.HWND) {
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l := (*layout)(data)
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l.hwnd = hwnd
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}
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//export windowResize
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func windowResize(data unsafe.Pointer, r *C.RECT) {
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l := (*layout)(data)
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// the origin of the window's content area is always (0, 0), but let's use the values from the RECT just to be safe
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l.resize(int(r.left), int(r.top), int(r.right - r.left), int(r.bottom - r.top))
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}
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//export windowClosing
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func windowClosing(data unsafe.Pointer) {
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l := (*layout)(data)
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close := l.closing.fire()
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if close {
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C.windowClose(l.hwnd)
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}
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}
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