317 lines
10 KiB
Plaintext
317 lines
10 KiB
Plaintext
/*
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* MIT License
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*
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* Copyright (C) 2021 by wangwenx190 (Yuhang Zhao)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "utilities.h"
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#include <objc/runtime.h>
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#include <Cocoa/Cocoa.h>
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#include <Carbon/Carbon.h>
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#include <QtGui/qguiapplication.h>
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#include <QtCore/qlist.h>
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FRAMELESSHELPER_BEGIN_NAMESPACE
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namespace Utilities {
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static constexpr int kDefaultResizeBorderThickness = 8;
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static constexpr int kDefaultCaptionHeight = 23;
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int getSystemMetric(const QWindow *window, const SystemMetric metric, const bool dpiScale, const bool forceSystemValue)
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{
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Q_ASSERT(window);
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if (!window) {
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return 0;
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}
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// The Apple platforms implement scaling and coordinate system virtualization,
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// so there is no need to scale again.
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switch (metric) {
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case SystemMetric::ResizeBorderThickness: {
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// ### TO BE IMPLEMENTED: Retrieve system value through official API
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return kDefaultResizeBorderThickness;
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}
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case SystemMetric::CaptionHeight: {
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// ### TO BE IMPLEMENTED: Retrieve system value through official API
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return kDefaultCaptionHeight;
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}
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case SystemMetric::TitleBarHeight: {
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const int captionHeight = getSystemMetric(window, SystemMetric::CaptionHeight,
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dpiScale, forceSystemValue);
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const int resizeBorderThickness = getSystemMetric(window, SystemMetric::ResizeBorderThickness,
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dpiScale, forceSystemValue);
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return (((window->windowState() == Qt::WindowMaximized)
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|| (window->windowState() == Qt::WindowFullScreen))
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? captionHeight : (captionHeight + resizeBorderThickness));
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}
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}
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return 0;
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}
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static QList<NSWindow*> gFlsWindows;
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static bool gNSWindowOverrode = false;
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typedef void (*setStyleMaskType)(id, SEL, NSWindowStyleMask);
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static setStyleMaskType gOrigSetStyleMask = nullptr;
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static void __setStyleMask(id obj, SEL sel, NSWindowStyleMask styleMask)
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{
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if (gFlsWindows.contains(reinterpret_cast<NSWindow *>(obj)))
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{
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styleMask = styleMask | NSWindowStyleMaskFullSizeContentView;
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}
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if (gOrigSetStyleMask != nullptr)
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gOrigSetStyleMask(obj, sel, styleMask);
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}
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typedef void (*setTitlebarAppearsTransparentType)(id, SEL, BOOL);
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static setTitlebarAppearsTransparentType gOrigSetTitlebarAppearsTransparent = nullptr;
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static void __setTitlebarAppearsTransparent(id obj, SEL sel, BOOL transparent)
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{
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if (gFlsWindows.contains(reinterpret_cast<NSWindow *>(obj)))
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transparent = true;
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if (gOrigSetTitlebarAppearsTransparent != nullptr)
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gOrigSetTitlebarAppearsTransparent(obj, sel, transparent);
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}
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typedef BOOL (*canBecomeKeyWindowType)(id, SEL);
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static canBecomeKeyWindowType gOrigCanBecomeKeyWindow = nullptr;
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static BOOL __canBecomeKeyWindow(id obj, SEL sel)
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{
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if (gFlsWindows.contains(reinterpret_cast<NSWindow *>(obj)))
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{
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return true;
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}
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if (gOrigCanBecomeKeyWindow != nullptr)
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return gOrigCanBecomeKeyWindow(obj, sel);
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return true;
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}
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typedef BOOL (*canBecomeMainWindowType)(id, SEL);
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static canBecomeMainWindowType gOrigCanBecomeMainWindow = nullptr;
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static BOOL __canBecomeMainWindow(id obj, SEL sel)
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{
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if (gFlsWindows.contains(reinterpret_cast<NSWindow *>(obj)))
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{
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return true;
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}
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if (gOrigCanBecomeMainWindow != nullptr)
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return gOrigCanBecomeMainWindow(obj, sel);
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return true;
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}
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typedef void (*sendEventType)(id, SEL, NSEvent*);
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static sendEventType gOrigSendEvent = nullptr;
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static void __sendEvent(id obj, SEL sel, NSEvent* event)
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{
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if (gOrigSendEvent != nullptr)
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gOrigSendEvent(obj, sel, event);
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if (!gFlsWindows.contains(reinterpret_cast<NSWindow *>(obj)))
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return;
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if (event.type == NSEventTypeLeftMouseDown)
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QGuiApplication::processEvents();
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}
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/*!
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Replace origin method \a origSEL of class \a cls with new one \a newIMP ,
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then return old method as function pointer.
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*/
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static void* replaceMethod(Class cls, SEL origSEL, IMP newIMP)
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{
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Method origMethod = class_getInstanceMethod(cls, origSEL);
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void *funcPtr = (void *)method_getImplementation(origMethod);
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if (!class_addMethod(cls, origSEL, newIMP, method_getTypeEncoding(origMethod))) {
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method_setImplementation(origMethod, newIMP);
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}
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return funcPtr;
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}
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static void restoreMethod(Class cls, SEL origSEL, IMP oldIMP)
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{
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Method method = class_getInstanceMethod(cls, origSEL);
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method_setImplementation(method, oldIMP);
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}
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static void overrideNSWindowMethods(NSWindow* window)
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{
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if (!gNSWindowOverrode) {
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Class cls = [window class];
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gOrigSetStyleMask = (setStyleMaskType) replaceMethod(
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cls, @selector(setStyleMask:), (IMP) __setStyleMask);
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gOrigSetTitlebarAppearsTransparent = (setTitlebarAppearsTransparentType) replaceMethod(
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cls, @selector(setTitlebarAppearsTransparent:), (IMP) __setTitlebarAppearsTransparent);
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gOrigCanBecomeKeyWindow = (canBecomeKeyWindowType) replaceMethod(
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cls, @selector(canBecomeKeyWindow), (IMP) __canBecomeKeyWindow);
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gOrigCanBecomeMainWindow = (canBecomeMainWindowType) replaceMethod(
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cls, @selector(canBecomeMainWindow), (IMP) __canBecomeMainWindow);
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gOrigSendEvent = (sendEventType) replaceMethod(
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cls, @selector(sendEvent:), (IMP) __sendEvent);
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gNSWindowOverrode = true;
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}
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gFlsWindows.append(window);
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}
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static void restoreNSWindowMethods(NSWindow* window)
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{
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gFlsWindows.removeAll(window);
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if (gFlsWindows.size() == 0) {
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Class cls = [window class];
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restoreMethod(cls, @selector(setStyleMask:), (IMP) gOrigSetStyleMask);
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gOrigSetStyleMask = nullptr;
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restoreMethod(cls, @selector(setTitlebarAppearsTransparent:), (IMP) gOrigSetTitlebarAppearsTransparent);
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gOrigSetTitlebarAppearsTransparent = nullptr;
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restoreMethod(cls, @selector(canBecomeKeyWindow), (IMP) gOrigCanBecomeKeyWindow);
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gOrigCanBecomeKeyWindow = nullptr;
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restoreMethod(cls, @selector(canBecomeMainWindow), (IMP) gOrigCanBecomeMainWindow);
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gOrigCanBecomeMainWindow = nullptr;
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restoreMethod(cls, @selector(sendEvent:), (IMP) gOrigSendEvent);
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gOrigSendEvent = nullptr;
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gNSWindowOverrode = false;
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}
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}
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static QHash<QWindow*, NSWindow*> gQWindowToNSWindow;
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static NSWindow* getNSWindow(QWindow* w)
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{
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NSView* view = reinterpret_cast<NSView *>(w->winId());
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if (view == nullptr)
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return nullptr;
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return [view window];
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}
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bool setMacWindowHook(QWindow* w)
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{
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NSWindow* nswindow = getNSWindow(w);
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if (nswindow == nullptr)
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return false;
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gQWindowToNSWindow.insert(w, nswindow);
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overrideNSWindowMethods(nswindow);
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return true;
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}
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bool unsetMacWindowHook(QWindow* w)
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{
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if (!gQWindowToNSWindow.contains(w))
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return false;
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NSWindow* obj = gQWindowToNSWindow[w];
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gQWindowToNSWindow.remove(w);
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restoreNSWindowMethods(obj);
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return true;
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}
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bool setMacWindowFrameless(QWindow* w)
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{
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NSView* view = reinterpret_cast<NSView *>(w->winId());
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if (view == nullptr)
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return false;
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NSWindow* nswindow = [view window];
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if (nswindow == nullptr)
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return false;
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view.wantsLayer = YES;
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nswindow.styleMask = nswindow.styleMask | NSWindowStyleMaskFullSizeContentView;
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nswindow.titlebarAppearsTransparent = true;
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nswindow.titleVisibility = NSWindowTitleHidden;
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nswindow.hasShadow = true;
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nswindow.movableByWindowBackground = false;
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nswindow.movable = false;
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nswindow.showsToolbarButton = false;
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[nswindow standardWindowButton:NSWindowCloseButton].hidden = true;
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[nswindow standardWindowButton:NSWindowMiniaturizeButton].hidden = true;
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[nswindow standardWindowButton:NSWindowZoomButton].hidden = true;
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[nswindow makeKeyWindow];
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return true;
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}
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bool showMacWindowButton(QWindow *w)
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{
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NSView* view = reinterpret_cast<NSView *>(w->winId());
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if (view == nullptr)
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return false;
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NSWindow* nswindow = [view window];
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if (nswindow == nullptr)
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return false;
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nswindow.showsToolbarButton = true;
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[nswindow standardWindowButton:NSWindowCloseButton].hidden = false;
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[nswindow standardWindowButton:NSWindowMiniaturizeButton].hidden = false;
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[nswindow standardWindowButton:NSWindowZoomButton].hidden = false;
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return true;
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}
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bool startMacDrag(QWindow* w, const QPoint& pos)
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{
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NSView* view = reinterpret_cast<NSView *>(w->winId());
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if (view == nullptr)
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return false;
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NSWindow* nswindow = [view window];
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if (nswindow == nullptr)
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return false;
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CGEventRef clickDown = CGEventCreateMouseEvent(
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NULL, kCGEventLeftMouseDown, CGPointMake(pos.x(), pos.y()), kCGMouseButtonLeft);
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NSEvent *nsevent = [NSEvent eventWithCGEvent:clickDown];
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[nswindow performWindowDragWithEvent:nsevent];
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CFRelease(clickDown);
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return true;
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}
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Qt::MouseButtons getMacMouseButtons()
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{
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return static_cast<Qt::MouseButtons>((uint)(NSEvent.pressedMouseButtons & Qt::MouseButtonMask));
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}
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} // namespace Utilities
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FRAMELESSHELPER_END_NAMESPACE
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