//---------------------------------------- // // Copyright © yanghy. All Rights Reserved. // // Licensed under Apache License Version 2.0, January 2004 // // https://www.apache.org/licenses/LICENSE-2.0 // //---------------------------------------- //go:build windows // LCL窗口组件定义和实现-windows平台 package cef import ( "github.com/energye/energy/v2/cef/winapi" "github.com/energye/energy/v2/consts" et "github.com/energye/energy/v2/types" "github.com/energye/golcl/lcl" "github.com/energye/golcl/lcl/rtl" "github.com/energye/golcl/lcl/types" "github.com/energye/golcl/lcl/win" ) // 定义四角和边框范围 var ( angleRange int32 = 10 //四角 borderRange int32 = 5 //四边框 ) // customWindowCaption 自定义窗口标题栏 // // 隐藏窗口标题栏,通过html+css实现自定义窗口标题栏,实现窗口拖拽等 type customWindowCaption struct { bw *LCLBrowserWindow // canCaption bool //当前鼠标是否在标题栏区域 canBorder bool //当前鼠标是否在边框 borderHT, borderWMSZ int //borderHT: 鼠标所在边框位置, borderWMSZ: 窗口改变大小边框方向 borderMD: borderMD bool //borderMD: 鼠标调整窗口大小,已按下后,再次接收到132消息应该忽略该消息 regions *TCefDraggableRegions //窗口内html拖拽区域 rgn *et.HRGN // } // ShowTitle 显示标题栏 func (m *LCLBrowserWindow) ShowTitle() { m.WindowProperty().EnableHideCaption = false //win.SetWindowLong(m.Handle(), win.GWL_STYLE, uintptr(win.GetWindowLong(m.Handle(), win.GWL_STYLE)|win.WS_CAPTION)) //win.SetWindowPos(m.Handle(), m.Handle(), 0, 0, 0, 0, win.SWP_NOSIZE|win.SWP_NOMOVE|win.SWP_NOZORDER|win.SWP_NOACTIVATE|win.SWP_FRAMECHANGED) m.EnabledMaximize(m.WindowProperty().EnableMaximize) m.EnabledMinimize(m.WindowProperty().EnableMinimize) m.SetBorderStyle(types.BsSizeable) } // HideTitle 隐藏标题栏 func (m *LCLBrowserWindow) HideTitle() { m.WindowProperty().EnableHideCaption = true //win.SetWindowLong(m.Handle(), win.GWL_STYLE, uintptr(win.GetWindowLong(m.Handle(), win.GWL_STYLE)&^win.WS_CAPTION)) //win.SetWindowPos(m.Handle(), 0, 0, 0, m.Width(), m.Height()+500, win.SWP_NOMOVE|win.SWP_NOZORDER|win.SWP_NOACTIVATE|win.SWP_FRAMECHANGED|win.SWP_DRAWFRAME) //无标题栏情况会导致任务栏不能切换窗口,不知道为什么要这样设置一下 m.EnabledMaximize(false) m.SetBorderStyle(types.BsNone) } // freeRgn func (m *customWindowCaption) freeRgn() { if m.rgn != nil { winapi.WinSetRectRgn(m.rgn, 0, 0, 0, 0) winapi.WinDeleteObject(m.rgn) m.rgn.Free() } } // freeRegions func (m *customWindowCaption) freeRegions() { if m.regions != nil { m.regions.regions = nil m.regions = nil } } // free func (m *customWindowCaption) free() { if m != nil { m.freeRgn() m.freeRegions() } } // onNCMouseMove NC 非客户区鼠标移动 func (m *customWindowCaption) onNCMouseMove(message *types.TMessage, lResult *types.LRESULT, aHandled *bool) { if m.canCaption { // 当前在标题栏 } else if m.canBorder { // 当前在边框 *lResult = types.LRESULT(m.borderHT) *aHandled = true } } // onSetCursor 设置鼠标图标 func (m *customWindowCaption) onSetCursor(message *types.TMessage, lResult *types.LRESULT, aHandled *bool) { if m.canBorder { //当前在边框 switch winapi.LOWORD(uint32(message.LParam)) { case consts.HTBOTTOMRIGHT, consts.HTTOPLEFT: //右下 左上 *lResult = types.LRESULT(m.borderHT) *aHandled = true winapi.WinSetCursor(winapi.WinLoadCursor(0, winapi.IDC_SIZENWSE)) case consts.HTRIGHT, consts.HTLEFT: //右 左 *lResult = types.LRESULT(m.borderHT) *aHandled = true winapi.WinSetCursor(winapi.WinLoadCursor(0, winapi.IDC_SIZEWE)) case consts.HTTOPRIGHT, consts.HTBOTTOMLEFT: //右上 左下 *lResult = types.LRESULT(m.borderHT) *aHandled = true winapi.WinSetCursor(winapi.WinLoadCursor(0, winapi.IDC_SIZENESW)) case consts.HTTOP, consts.HTBOTTOM: //上 下 *lResult = types.LRESULT(m.borderHT) *aHandled = true winapi.WinSetCursor(winapi.WinLoadCursor(0, winapi.IDC_SIZENS)) } } } // onCanBorder 鼠标是否在边框 func (m *customWindowCaption) onCanBorder(x, y int32, rect *types.TRect) (int, bool) { if m.canBorder = x <= rect.Width() && x >= rect.Width()-angleRange && y <= angleRange; m.canBorder { // 右上 m.borderWMSZ = winapi.WMSZ_TOPRIGHT m.borderHT = consts.HTTOPRIGHT return m.borderHT, true } else if m.canBorder = x <= rect.Width() && x >= rect.Width()-angleRange && y <= rect.Height() && y >= rect.Height()-angleRange; m.canBorder { // 右下 m.borderWMSZ = winapi.WMSZ_BOTTOMRIGHT m.borderHT = consts.HTBOTTOMRIGHT return m.borderHT, true } else if m.canBorder = x <= angleRange && y <= angleRange; m.canBorder { //左上 m.borderWMSZ = winapi.WMSZ_TOPLEFT m.borderHT = consts.HTTOPLEFT return m.borderHT, true } else if m.canBorder = x <= angleRange && y >= rect.Height()-angleRange; m.canBorder { //左下 m.borderWMSZ = winapi.WMSZ_BOTTOMLEFT m.borderHT = consts.HTBOTTOMLEFT return m.borderHT, true } else if m.canBorder = x > angleRange && x < rect.Width()-angleRange && y <= borderRange; m.canBorder { //上 m.borderWMSZ = winapi.WMSZ_TOP m.borderHT = consts.HTTOP return m.borderHT, true } else if m.canBorder = x > angleRange && x < rect.Width()-angleRange && y >= rect.Height()-borderRange; m.canBorder { //下 m.borderWMSZ = winapi.WMSZ_BOTTOM m.borderHT = consts.HTBOTTOM return m.borderHT, true } else if m.canBorder = x <= borderRange && y > angleRange && y < rect.Height()-angleRange; m.canBorder { //左 m.borderWMSZ = winapi.WMSZ_LEFT m.borderHT = consts.HTLEFT return m.borderHT, true } else if m.canBorder = x <= rect.Width() && x >= rect.Width()-borderRange && y > angleRange && y < rect.Height()-angleRange; m.canBorder { // 右 m.borderWMSZ = winapi.WMSZ_RIGHT m.borderHT = consts.HTRIGHT return m.borderHT, true } return 0, false } // onNCLButtonDown NC 鼠标左键按下 func (m *customWindowCaption) onNCLButtonDown(hWND types.HWND, message *types.TMessage, lResult *types.LRESULT, aHandled *bool) { if m.canCaption { // 标题栏 x, y := m.toPoint(message) *lResult = consts.HTCAPTION m.borderMD = true *aHandled = true win.ReleaseCapture() rtl.PostMessage(hWND, consts.WM_NCLBUTTONDOWN, consts.HTCAPTION, rtl.MakeLParam(uint16(x), uint16(y))) } else if m.canBorder { // 边框 x, y := m.toPoint(message) *lResult = types.LRESULT(m.borderHT) m.borderMD = true *aHandled = true win.ReleaseCapture() rtl.PostMessage(hWND, consts.WM_SYSCOMMAND, uintptr(consts.SC_SIZE|m.borderWMSZ), rtl.MakeLParam(uint16(x), uint16(y))) //rtl.PostMessage(hWND, WM_SYSCOMMAND, uintptr(SC_SIZE|m.borderWMSZ), 0) } } // toPoint 转换XY坐标 func (m *customWindowCaption) toPoint(message *types.TMessage) (x, y int32) { return winapi.GET_X_LPARAM(message.LParam), winapi.GET_Y_LPARAM(message.LParam) } // isCaption // 鼠标是否在标题栏区域 // // 如果启用了css拖拽则校验拖拽区域,否则只返回相对于浏览器窗口的x,y坐标 func (m *customWindowCaption) isCaption(hWND et.HWND, message *types.TMessage) (int32, int32, bool) { dx, dy := m.toPoint(message) p := &et.Point{ X: dx, Y: dy, } winapi.WinScreenToClient(hWND, p) p.X -= m.bw.WindowParent().Left() p.Y -= m.bw.WindowParent().Top() if m.bw.WindowProperty().EnableWebkitAppRegion && m.rgn != nil { m.canCaption = winapi.WinPtInRegion(m.rgn, p.X, p.Y) } else { m.canCaption = false } return p.X, p.Y, m.canCaption } // doOnRenderCompMsg func (m *LCLBrowserWindow) doOnRenderCompMsg(message *types.TMessage, lResult *types.LRESULT, aHandled *bool) { switch message.Msg { case consts.WM_NCLBUTTONDBLCLK: // 163 NC left dclick //标题栏拖拽区域 双击最大化和还原 if m.cwcap.canCaption && m.WindowProperty().EnableWebkitAppRegionDClk { *lResult = consts.HTCAPTION *aHandled = true win.ReleaseCapture() m.windowProperty.windowState = m.WindowState() if m.windowProperty.windowState == types.WsNormal { rtl.PostMessage(m.Handle(), consts.WM_SYSCOMMAND, consts.SC_MAXIMIZE, 0) } else { rtl.PostMessage(m.Handle(), consts.WM_SYSCOMMAND, consts.SC_RESTORE, 0) } rtl.SendMessage(m.Handle(), consts.WM_NCLBUTTONUP, consts.HTCAPTION, 0) } case consts.WM_NCLBUTTONDOWN: // 161 nc left down m.cwcap.onNCLButtonDown(m.Handle(), message, lResult, aHandled) case consts.WM_NCLBUTTONUP: // 162 nc l up if m.cwcap.canCaption { *lResult = consts.HTCAPTION *aHandled = true } case consts.WM_NCMOUSEMOVE: // 160 nc mouse move m.cwcap.onNCMouseMove(message, lResult, aHandled) case consts.WM_SETCURSOR: // 32 设置鼠标图标样式 m.cwcap.onSetCursor(message, lResult, aHandled) case consts.WM_NCHITTEST: // 132 NCHITTEST if m.cwcap.borderMD { //TODO 测试windows7, 161消息之后再次处理132消息导致消息错误 m.cwcap.borderMD = false return } //鼠标坐标是否在标题区域 x, y, caption := m.cwcap.isCaption(et.HWND(m.Handle()), message) if caption { //窗口标题栏 *lResult = consts.HTCAPTION *aHandled = true } else if m.WindowProperty().EnableHideCaption && m.WindowProperty().EnableResize && m.WindowState() == types.WsNormal { //1.窗口隐藏标题栏 2.启用了调整窗口大小 3.非最大化、最小化、全屏状态 rect := m.BoundsRect() if result, handled := m.cwcap.onCanBorder(x, y, &rect); handled { *lResult = types.LRESULT(result) *aHandled = true } } } } // setDraggableRegions // 每一次拖拽区域改变都需要重新设置 func (m *LCLBrowserWindow) setDraggableRegions() { //在主线程中运行 QueueAsyncCall(func(id int) { if m.cwcap.rgn == nil { //第一次时创建RGN m.cwcap.rgn = winapi.WinCreateRectRgn(0, 0, 0, 0) } else { //每次重置RGN winapi.WinSetRectRgn(m.cwcap.rgn, 0, 0, 0, 0) } for i := 0; i < m.cwcap.regions.RegionsCount(); i++ { region := m.cwcap.regions.Region(i) creRGN := winapi.WinCreateRectRgn(region.Bounds.X, region.Bounds.Y, region.Bounds.X+region.Bounds.Width, region.Bounds.Y+region.Bounds.Height) if region.Draggable { winapi.WinCombineRgn(m.cwcap.rgn, m.cwcap.rgn, creRGN, consts.RGN_OR) } else { winapi.WinCombineRgn(m.cwcap.rgn, m.cwcap.rgn, creRGN, consts.RGN_DIFF) } winapi.WinDeleteObject(creRGN) } }) } // registerWindowsCompMsgEvent // 注册windows下CompMsg事件 func (m *LCLBrowserWindow) registerWindowsCompMsgEvent() { var bwEvent = BrowserWindow.browserEvent m.Chromium().SetOnRenderCompMsg(func(sender lcl.IObject, message *types.TMessage, lResult *types.LRESULT, aHandled *bool) { if bwEvent.onRenderCompMsg != nil { bwEvent.onRenderCompMsg(sender, message, lResult, aHandled) } if !*aHandled { m.doOnRenderCompMsg(message, lResult, aHandled) } }) if m.WindowProperty().EnableWebkitAppRegion && m.WindowProperty().EnableWebkitAppRegionDClk { m.windowResize = func(sender lcl.IObject) bool { if m.WindowState() == types.WsMaximized && (m.WindowProperty().EnableHideCaption || m.BorderStyle() == types.BsNone || m.BorderStyle() == types.BsSingle) { var monitor = m.Monitor().WorkareaRect() m.SetBounds(monitor.Left, monitor.Top, monitor.Right-monitor.Left, monitor.Bottom-monitor.Top) m.SetWindowState(types.WsMaximized) } return false } } //if m.WindowProperty().EnableWebkitAppRegion { // //} else { // if bwEvent.onRenderCompMsg != nil { // m.chromium.SetOnRenderCompMsg(bwEvent.onRenderCompMsg) // } //} } // Maximize Windows平台,窗口最大化/还原 func (m *LCLBrowserWindow) Maximize() { if m.TForm == nil { return } QueueAsyncCall(func(id int) { win.ReleaseCapture() m.windowProperty.windowState = m.WindowState() if m.windowProperty.windowState == types.WsNormal { rtl.PostMessage(m.Handle(), consts.WM_SYSCOMMAND, consts.SC_MAXIMIZE, 0) } else { rtl.SendMessage(m.Handle(), consts.WM_SYSCOMMAND, consts.SC_RESTORE, 0) } }) } // 窗口透明 //func (m *LCLBrowserWindow) SetTransparentColor() { // m.SetColor(colors.ClNavy) // Exstyle := win.GetWindowLong(m.Handle(), win.GWL_EXSTYLE) // Exstyle = Exstyle | win.WS_EX_LAYERED&^win.WS_EX_TRANSPARENT // win.SetWindowLong(m.Handle(), win.GWL_EXSTYLE, uintptr(Exstyle)) // win.SetLayeredWindowAttributes(m.Handle(), // colors.ClNavy, //crKey 指定需要透明的背景颜色值 // 255, //bAlpha 设置透明度,0完全透明,255不透明 // //LWA_ALPHA: crKey无效,bAlpha有效 // //LWA_COLORKEY: 窗体中的所有颜色为crKey的地方全透明,bAlpha无效 // //LWA_ALPHA | LWA_COLORKEY: crKey的地方全透明,其它地方根据bAlpha确定透明度 // win.LWA_ALPHA|win.LWA_COLORKEY) //}