The Tor Browser / file comparison
comparison: widget/qt/nsScreenManagerQt.cpp
widget/qt/nsScreenManagerQt.cpp
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
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| -1:000000000000 | 0:a051c08a70ce |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 #include <QGuiApplication> | |
| 6 #include <QScreen> | |
| 7 | |
| 8 #include "nsScreenManagerQt.h" | |
| 9 #include "nsScreenQt.h" | |
| 10 | |
| 11 nsScreenManagerQt::nsScreenManagerQt() | |
| 12 { | |
| 13 mInitialized = false; | |
| 14 desktop = 0; | |
| 15 screens = 0; | |
| 16 } | |
| 17 | |
| 18 nsScreenManagerQt::~nsScreenManagerQt() | |
| 19 { | |
| 20 delete [] screens; | |
| 21 } | |
| 22 | |
| 23 // addref, release, QI | |
| 24 NS_IMPL_ISUPPORTS(nsScreenManagerQt, nsIScreenManager) | |
| 25 | |
| 26 void nsScreenManagerQt::init() | |
| 27 { | |
| 28 if (mInitialized) | |
| 29 return; | |
| 30 | |
| 31 nScreens = QGuiApplication::screens().size(); | |
| 32 screens = new nsCOMPtr<nsIScreen>[nScreens]; | |
| 33 | |
| 34 for (int i = 0; i < nScreens; ++i) | |
| 35 screens[i] = new nsScreenQt(i); | |
| 36 mInitialized = true; | |
| 37 } | |
| 38 | |
| 39 // | |
| 40 // ScreenForRect | |
| 41 // | |
| 42 // Returns the screen that contains the rectangle. If the rect overlaps | |
| 43 // multiple screens, it picks the screen with the greatest area of intersection. | |
| 44 // | |
| 45 // The coordinates are in pixels (not twips) and in screen coordinates. | |
| 46 // | |
| 47 NS_IMETHODIMP | |
| 48 nsScreenManagerQt::ScreenForRect(int32_t inLeft, int32_t inTop, | |
| 49 int32_t inWidth, int32_t inHeight, | |
| 50 nsIScreen **outScreen) | |
| 51 { | |
| 52 if (!mInitialized) | |
| 53 init(); | |
| 54 | |
| 55 QRect r(inLeft, inTop, inWidth, inHeight); | |
| 56 int best = 0; | |
| 57 int area = 0; | |
| 58 for (int i = 0; i < nScreens; ++i) { | |
| 59 const QRect& rect = QGuiApplication::screens()[i]->geometry(); | |
| 60 QRect intersection = r▭ | |
| 61 int a = intersection.width()*intersection.height(); | |
| 62 if (a > area) { | |
| 63 best = i; | |
| 64 area = a; | |
| 65 } | |
| 66 } | |
| 67 | |
| 68 NS_IF_ADDREF(*outScreen = screens[best]); | |
| 69 return NS_OK; | |
| 70 } | |
| 71 | |
| 72 // | |
| 73 // GetPrimaryScreen | |
| 74 // | |
| 75 // The screen with the menubar/taskbar. This shouldn't be needed very | |
| 76 // often. | |
| 77 // | |
| 78 NS_IMETHODIMP | |
| 79 nsScreenManagerQt::GetPrimaryScreen(nsIScreen **aPrimaryScreen) | |
| 80 { | |
| 81 if (!desktop) | |
| 82 init(); | |
| 83 | |
| 84 NS_IF_ADDREF(*aPrimaryScreen = screens[0]); | |
| 85 return NS_OK; | |
| 86 } | |
| 87 | |
| 88 // | |
| 89 // GetNumberOfScreens | |
| 90 // | |
| 91 // Returns how many physical screens are available. | |
| 92 // | |
| 93 NS_IMETHODIMP | |
| 94 nsScreenManagerQt::GetNumberOfScreens(uint32_t *aNumberOfScreens) | |
| 95 { | |
| 96 if (!desktop) | |
| 97 init(); | |
| 98 | |
| 99 *aNumberOfScreens = nScreens; | |
| 100 return NS_OK; | |
| 101 } | |
| 102 | |
| 103 NS_IMETHODIMP | |
| 104 nsScreenManagerQt::GetSystemDefaultScale(float *aDefaultScale) | |
| 105 { | |
| 106 *aDefaultScale = 1.0f; | |
| 107 return NS_OK; | |
| 108 } | |
| 109 | |
| 110 NS_IMETHODIMP | |
| 111 nsScreenManagerQt::ScreenForNativeWidget(void *aWidget, nsIScreen **outScreen) | |
| 112 { | |
| 113 // I don't know how to go from GtkWindow to nsIScreen, especially | |
| 114 // given xinerama and stuff, so let's just do this | |
| 115 QRect rect(0, 0, 1, 1); | |
| 116 return ScreenForRect(rect.x(), rect.y(), rect.width(), rect.height(), outScreen); | |
| 117 } |
