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118 lines
2.7 KiB
C++
118 lines
2.7 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <QGuiApplication>
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#include <QScreen>
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#include "nsScreenManagerQt.h"
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#include "nsScreenQt.h"
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nsScreenManagerQt::nsScreenManagerQt()
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{
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mInitialized = false;
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desktop = 0;
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screens = 0;
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}
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nsScreenManagerQt::~nsScreenManagerQt()
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{
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delete [] screens;
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}
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// addref, release, QI
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NS_IMPL_ISUPPORTS(nsScreenManagerQt, nsIScreenManager)
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void nsScreenManagerQt::init()
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{
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if (mInitialized)
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return;
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nScreens = QGuiApplication::screens().size();
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screens = new nsCOMPtr<nsIScreen>[nScreens];
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for (int i = 0; i < nScreens; ++i)
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screens[i] = new nsScreenQt(i);
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mInitialized = true;
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}
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//
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// ScreenForRect
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//
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// Returns the screen that contains the rectangle. If the rect overlaps
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// multiple screens, it picks the screen with the greatest area of intersection.
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//
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// The coordinates are in pixels (not twips) and in screen coordinates.
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//
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NS_IMETHODIMP
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nsScreenManagerQt::ScreenForRect(int32_t inLeft, int32_t inTop,
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int32_t inWidth, int32_t inHeight,
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nsIScreen **outScreen)
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{
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if (!mInitialized)
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init();
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QRect r(inLeft, inTop, inWidth, inHeight);
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int best = 0;
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int area = 0;
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for (int i = 0; i < nScreens; ++i) {
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const QRect& rect = QGuiApplication::screens()[i]->geometry();
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QRect intersection = r▭
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int a = intersection.width()*intersection.height();
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if (a > area) {
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best = i;
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area = a;
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}
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}
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NS_IF_ADDREF(*outScreen = screens[best]);
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return NS_OK;
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}
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//
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// GetPrimaryScreen
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//
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// The screen with the menubar/taskbar. This shouldn't be needed very
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// often.
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//
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NS_IMETHODIMP
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nsScreenManagerQt::GetPrimaryScreen(nsIScreen **aPrimaryScreen)
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{
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if (!desktop)
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init();
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NS_IF_ADDREF(*aPrimaryScreen = screens[0]);
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return NS_OK;
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}
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//
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// GetNumberOfScreens
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//
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// Returns how many physical screens are available.
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//
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NS_IMETHODIMP
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nsScreenManagerQt::GetNumberOfScreens(uint32_t *aNumberOfScreens)
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{
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if (!desktop)
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init();
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*aNumberOfScreens = nScreens;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsScreenManagerQt::GetSystemDefaultScale(float *aDefaultScale)
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{
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*aDefaultScale = 1.0f;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsScreenManagerQt::ScreenForNativeWidget(void *aWidget, nsIScreen **outScreen)
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{
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// I don't know how to go from GtkWindow to nsIScreen, especially
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// given xinerama and stuff, so let's just do this
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QRect rect(0, 0, 1, 1);
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return ScreenForRect(rect.x(), rect.y(), rect.width(), rect.height(), outScreen);
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}
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