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https://github.com/wailsapp/wails.git
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f70d9de366
* fix: fix go test errors * Add flags to mac test * Run on all branches * Update PR workflow Co-authored-by: Lea Anthony <lea.anthony@gmail.com>
122 lines
2.2 KiB
Go
122 lines
2.2 KiB
Go
//go:build windows
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/*
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* Copyright (C) 2019 The Winc Authors. All Rights Reserved.
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* Copyright (C) 2010-2013 Allen Dang. All Rights Reserved.
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*/
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package winc
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import (
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"syscall"
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"github.com/wailsapp/wails/v2/internal/frontend/desktop/windows/winc/w32"
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)
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const (
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FontBold byte = 0x01
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FontItalic byte = 0x02
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FontUnderline byte = 0x04
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FontStrikeOut byte = 0x08
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)
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func init() {
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DefaultFont = NewFont("MS Shell Dlg 2", 8, 0)
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}
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type Font struct {
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hfont w32.HFONT
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family string
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pointSize int
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style byte
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}
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func NewFont(family string, pointSize int, style byte) *Font {
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if style > FontBold|FontItalic|FontUnderline|FontStrikeOut {
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panic("Invalid font style")
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}
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//Retrive screen DPI
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hDC := w32.GetDC(0)
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defer w32.ReleaseDC(0, hDC)
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screenDPIY := w32.GetDeviceCaps(hDC, w32.LOGPIXELSY)
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font := Font{
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family: family,
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pointSize: pointSize,
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style: style,
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}
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font.hfont = font.createForDPI(screenDPIY)
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if font.hfont == 0 {
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panic("CreateFontIndirect failed")
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}
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return &font
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}
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func (fnt *Font) createForDPI(dpi int) w32.HFONT {
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var lf w32.LOGFONT
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lf.Height = int32(-w32.MulDiv(fnt.pointSize, dpi, 72))
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if fnt.style&FontBold > 0 {
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lf.Weight = w32.FW_BOLD
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} else {
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lf.Weight = w32.FW_NORMAL
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}
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if fnt.style&FontItalic > 0 {
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lf.Italic = 1
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}
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if fnt.style&FontUnderline > 0 {
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lf.Underline = 1
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}
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if fnt.style&FontStrikeOut > 0 {
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lf.StrikeOut = 1
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}
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lf.CharSet = w32.DEFAULT_CHARSET
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lf.OutPrecision = w32.OUT_TT_PRECIS
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lf.ClipPrecision = w32.CLIP_DEFAULT_PRECIS
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lf.Quality = w32.CLEARTYPE_QUALITY
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lf.PitchAndFamily = w32.VARIABLE_PITCH | w32.FF_SWISS
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src := syscall.StringToUTF16(fnt.family)
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dest := lf.FaceName[:]
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copy(dest, src)
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return w32.CreateFontIndirect(&lf)
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}
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func (fnt *Font) GetHFONT() w32.HFONT {
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return fnt.hfont
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}
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func (fnt *Font) Bold() bool {
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return fnt.style&FontBold > 0
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}
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func (fnt *Font) Dispose() {
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if fnt.hfont != 0 {
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w32.DeleteObject(w32.HGDIOBJ(fnt.hfont))
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}
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}
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func (fnt *Font) Family() string {
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return fnt.family
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}
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func (fnt *Font) Italic() bool {
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return fnt.style&FontItalic > 0
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}
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func (fnt *Font) StrikeOut() bool {
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return fnt.style&FontStrikeOut > 0
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}
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func (fnt *Font) Underline() bool {
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return fnt.style&FontUnderline > 0
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}
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func (fnt *Font) Style() byte {
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return fnt.style
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}
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