46 lines
1007 B
Go
46 lines
1007 B
Go
// 16 august 2014
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package ui
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import (
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"image"
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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 imagelist struct {
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list []C.HBITMAP
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width []int
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height []int
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}
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func newImageList() ImageList {
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return new(imagelist)
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}
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func (i *imagelist) Append(img *image.RGBA) {
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i.list = append(i.list, C.unscaledBitmap(unsafe.Pointer(img), C.intptr_t(img.Rect.Dx()), C.intptr_t(img.Rect.Dy())))
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i.width = append(i.width, img.Rect.Dx())
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i.height = append(i.height, img.Rect.Dy())
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}
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func (i *imagelist) Len() ImageIndex {
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return ImageIndex(len(i.list))
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}
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type imageListApply interface {
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apply(C.HWND, C.UINT)
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}
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func (i *imagelist) apply(hwnd C.HWND, uMsg C.UINT) {
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width := C.GetSystemMetrics(C.SM_CXSMICON)
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height := C.GetSystemMetrics(C.SM_CYSMICON)
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il := C.newImageList(width, height)
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for index := range i.list {
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C.addImage(il, hwnd, i.list[index], C.int(i.width[index]), C.int(i.height[index]), width, height)
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}
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C.SendMessageW(hwnd, uMsg, 0, C.LPARAM(uintptr(unsafe.Pointer(il))))
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}
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