Port away from QRegion::rects

Summary:
QRegion::rects was deprecated in Qt 5.11. It is advised to use begin()
and end() methods instead.

Reviewers: #kwin, romangg

Reviewed By: #kwin, romangg

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D22353

effects/backgroundcontrast/contrast.cpp

@@ -442,16 +442,15 @@ void ContrastEffect::drawWindow(EffectWindow *w, int mask, QRegion region, Windo
         const bool scaled = data.xScale() != 1 || data.yScale() != 1;
         if (scaled) {
             QPoint pt = shape.boundingRect().topLeft();
-            QVector<QRect> shapeRects = shape.rects();
-            shape = QRegion(); // clear
-            foreach (QRect r, shapeRects) {
+            QRegion scaledShape;
+            for (QRect r : shape) {
                 r.moveTo(pt.x() + (r.x() - pt.x()) * data.xScale() + data.xTranslation(),
                             pt.y() + (r.y() - pt.y()) * data.yScale() + data.yTranslation());
                 r.setWidth(r.width() * data.xScale());
                 r.setHeight(r.height() * data.yScale());
-                shape |= r;
+                scaledShape |= r;
             }
-            shape = shape & region;
+            shape = scaledShape & region;
 
         //Only translated, not scaled
         } else if (translated) {

effects/blur/blur.cpp

@@ -591,16 +591,15 @@ void BlurEffect::drawWindow(EffectWindow *w, int mask, QRegion region, WindowPai
         const bool scaled = data.xScale() != 1 || data.yScale() != 1;
         if (scaled) {
             QPoint pt = shape.boundingRect().topLeft();
-            QVector<QRect> shapeRects = shape.rects();
-            shape = QRegion(); // clear
-            foreach (QRect r, shapeRects) {
+            QRegion scaledShape;
+            for (QRect r : shape) {
                 r.moveTo(pt.x() + (r.x() - pt.x()) * data.xScale() + data.xTranslation(),
                             pt.y() + (r.y() - pt.y()) * data.yScale() + data.yTranslation());
                 r.setWidth(r.width() * data.xScale());
                 r.setHeight(r.height() * data.yScale());
-                shape |= r;
+                scaledShape |= r;
             }
-            shape = shape & region;
+            shape = scaledShape & region;
 
         //Only translated, not scaled
         } else if (translated) {

effects/cube/cube.cpp

@@ -1283,7 +1283,7 @@ void CubeEffect::paintWindow(EffectWindow* w, int mask, QRegion region, WindowPa
                     quadSize = 150.0f;
                 else
                     quadSize = 250.0f;
-                foreach (const QRect & paintRect, paint.rects()) {
+                for (const QRect &paintRect : paint) {
                     for (int i = 0; i <= (paintRect.height() / quadSize); i++) {
                         for (int j = 0; j <= (paintRect.width() / quadSize); j++) {
                             verts << qMin(paintRect.x() + (j + 1)*quadSize, (float)paintRect.x() + paintRect.width()) << paintRect.y() + i*quadSize;

effects/resize/resize.cpp

@@ -93,8 +93,8 @@ void ResizeEffect::paintWindow(EffectWindow* w, int mask, QRegion region, Window
                 color.setAlphaF(alpha);
                 vbo->setColor(color);
                 QVector<float> verts;
-                verts.reserve(paintRegion.rects().count() * 12);
-                foreach (const QRect & r, paintRegion.rects()) {
+                verts.reserve(paintRegion.rectCount() * 12);
+                for (const QRect &r : paintRegion) {
                     verts << r.x() + r.width() << r.y();
                     verts << r.x() << r.y();
                     verts << r.x() << r.y() + r.height();
@@ -110,7 +110,7 @@ void ResizeEffect::paintWindow(EffectWindow* w, int mask, QRegion region, Window
 #ifdef KWIN_HAVE_XRENDER_COMPOSITING
             if (effects->compositingType() == XRenderCompositing) {
                 QVector<xcb_rectangle_t> rects;
-                foreach (const QRect & r, paintRegion.rects()) {
+                for (const QRect &r : paintRegion) {
                     xcb_rectangle_t rect = {int16_t(r.x()), int16_t(r.y()), uint16_t(r.width()), uint16_t(r.height())};
                     rects << rect;
                 }
@@ -123,7 +123,7 @@ void ResizeEffect::paintWindow(EffectWindow* w, int mask, QRegion region, Window
                 QPainter *painter = effects->scenePainter();
                 painter->save();
                 color.setAlphaF(alpha);
-                foreach (const QRect &r, paintRegion.rects()) {
+                for (const QRect &r : paintRegion) {
                     painter->fillRect(r, color);
                 }
                 painter->restore();

effects/showfps/showfps.cpp

@@ -145,8 +145,9 @@ void ShowFpsEffect::paintWindow(EffectWindow* w, int mask, QRegion region, Windo
     QRegion r2 = region & QRect(w->x(), w->y(), w->width(), w->height());
     r2 -= fps_rect;
     int winsize = 0;
-    foreach (const QRect & r, r2.rects())
-    winsize += r.width() * r.height();
+    for (const QRect &r : r2) {
+        winsize += r.width() * r.height();
+    }
     paint_size[ paints_pos ] += winsize;
 }
 

geometry.cpp

@@ -1178,44 +1178,44 @@ void AbstractClient::checkWorkspacePosition(QRect oldGeometry, int oldDesktop, Q
                                 &Workspace::previousRestrictedMoveArea : //... the restricted areas changed
                                 &Workspace::restrictedMoveArea; //... when e.g. active desktop or screen changes
 
-    foreach (const QRect & r, (workspace()->*moveAreaFunc)(oldDesktop, StrutAreaTop).rects()) {
+    for (const QRect &r : (workspace()->*moveAreaFunc)(oldDesktop, StrutAreaTop)) {
         QRect rect = r & oldGeomTall;
         if (!rect.isEmpty())
             oldTopMax = qMax(oldTopMax, rect.y() + rect.height());
     }
-    foreach (const QRect & r, (workspace()->*moveAreaFunc)(oldDesktop, StrutAreaRight).rects()) {
+    for (const QRect &r : (workspace()->*moveAreaFunc)(oldDesktop, StrutAreaRight)) {
         QRect rect = r & oldGeomWide;
         if (!rect.isEmpty())
             oldRightMax = qMin(oldRightMax, rect.x());
     }
-    foreach (const QRect & r, (workspace()->*moveAreaFunc)(oldDesktop, StrutAreaBottom).rects()) {
+    for (const QRect &r : (workspace()->*moveAreaFunc)(oldDesktop, StrutAreaBottom)) {
         QRect rect = r & oldGeomTall;
         if (!rect.isEmpty())
             oldBottomMax = qMin(oldBottomMax, rect.y());
     }
-    foreach (const QRect & r, (workspace()->*moveAreaFunc)(oldDesktop, StrutAreaLeft).rects()) {
+    for (const QRect &r : (workspace()->*moveAreaFunc)(oldDesktop, StrutAreaLeft)) {
         QRect rect = r & oldGeomWide;
         if (!rect.isEmpty())
             oldLeftMax = qMax(oldLeftMax, rect.x() + rect.width());
     }
 
     // These 4 compute new bounds
-    foreach (const QRect & r, workspace()->restrictedMoveArea(desktop(), StrutAreaTop).rects()) {
+    for (const QRect &r : workspace()->restrictedMoveArea(desktop(), StrutAreaTop)) {
         QRect rect = r & newGeomTall;
         if (!rect.isEmpty())
             topMax = qMax(topMax, rect.y() + rect.height());
     }
-    foreach (const QRect & r, workspace()->restrictedMoveArea(desktop(), StrutAreaRight).rects()) {
+    for (const QRect &r : workspace()->restrictedMoveArea(desktop(), StrutAreaRight)) {
         QRect rect = r & newGeomWide;
         if (!rect.isEmpty())
             rightMax = qMin(rightMax, rect.x());
     }
-    foreach (const QRect & r, workspace()->restrictedMoveArea(desktop(), StrutAreaBottom).rects()) {
+    for (const QRect &r : workspace()->restrictedMoveArea(desktop(), StrutAreaBottom)) {
         QRect rect = r & newGeomTall;
         if (!rect.isEmpty())
             bottomMax = qMin(bottomMax, rect.y());
     }
-    foreach (const QRect & r, workspace()->restrictedMoveArea(desktop(), StrutAreaLeft).rects()) {
+    for (const QRect &r : workspace()->restrictedMoveArea(desktop(), StrutAreaLeft)) {
         QRect rect = r & newGeomWide;
         if (!rect.isEmpty())
             leftMax = qMax(leftMax, rect.x() + rect.width());
@@ -2948,7 +2948,7 @@ void AbstractClient::handleMoveResize(int x, int y, int x_root, int y_root)
                 const QRect titleRect(bTitleRect.translated(moveResizeGeometry().topLeft()));
                 int visiblePixels = 0;
                 int realVisiblePixels = 0;
-                foreach (const QRect &rect, availableArea.rects()) {
+                for (const QRect &rect : availableArea) {
                     const QRect r = rect & titleRect;
                     realVisiblePixels += r.width() * r.height();
                     if ((transposed && r.width() == titleRect.width()) || // Only the full size regions...
@@ -3073,7 +3073,7 @@ void AbstractClient::handleMoveResize(int x, int y, int x_root, int y_root)
                     QRect moveResizeGeom = moveResizeGeometry();
                     const QRect titleRect(bTitleRect.translated(moveResizeGeom.topLeft()));
                     int visiblePixels = 0;
-                    foreach (const QRect &rect, availableArea.rects()) {
+                    for (const QRect &rect : availableArea) {
                         const QRect r = rect & titleRect;
                         if ((transposed && r.width() == titleRect.width()) || // Only the full size regions...
                             (!transposed && r.height() == titleRect.height())) // ...prevents long slim areas
@@ -3094,7 +3094,7 @@ void AbstractClient::handleMoveResize(int x, int y, int x_root, int y_root)
                     if (screens()->count() > 1) { // optimization
                         // TODO: could be useful on partial screen struts (half-width panels etc.)
                         int newTitleTop = -1;
-                        foreach (const QRect &r, strut.rects()) {
+                        for (const QRect &r : strut) {
                             if (r.top() == 0 && r.width() > r.height() && // "top panel"
                                 r.intersects(moveResizeGeom) && moveResizeGeom.top() < r.bottom()) {
                                 newTitleTop = r.bottom() + 1;

libkwineffects/kwinxrenderutils.cpp

@@ -167,18 +167,15 @@ XRenderPictureData::~XRenderPictureData()
 XFixesRegion::XFixesRegion(const QRegion &region)
 {
     m_region = xcb_generate_id(XRenderUtils::s_connection);
-    QVector< QRect > rects = region.rects();
-    QVector< xcb_rectangle_t > xrects(rects.count());
-    for (int i = 0;
-            i < rects.count();
-            ++i) {
-        const QRect &rect = rects.at(i);
+    QVector<xcb_rectangle_t> xrects;
+    xrects.reserve(region.rectCount());
+    for (const QRect &rect : region) {
         xcb_rectangle_t xrect;
         xrect.x = rect.x();
         xrect.y = rect.y();
         xrect.width = rect.width();
         xrect.height = rect.height();
-        xrects[i] = xrect;
+        xrects.append(xrect);
     }
     xcb_xfixes_create_region(XRenderUtils::s_connection, m_region, xrects.count(), xrects.constData());
 }

platformsupport/scenes/opengl/abstract_egl_backend.cpp

@@ -407,14 +407,14 @@ void AbstractEglTexture::updateTexture(WindowPixmap *pixmap)
     if (GLPlatform::instance()->isGLES()) {
         if (s_supportsARGB32 && (image.format() == QImage::Format_ARGB32 || image.format() == QImage::Format_ARGB32_Premultiplied)) {
             const QImage im = image.convertToFormat(QImage::Format_ARGB32_Premultiplied);
-            for (const QRect &rect : damage.rects()) {
+            for (const QRect &rect : damage) {
                 auto scaledRect = QRect(rect.x() * scale, rect.y() * scale, rect.width() * scale, rect.height() * scale);
                 glTexSubImage2D(m_target, 0, scaledRect.x(), scaledRect.y(), scaledRect.width(), scaledRect.height(),
                                 GL_BGRA_EXT, GL_UNSIGNED_BYTE, im.copy(scaledRect).bits());
             }
         } else {
             const QImage im = image.convertToFormat(QImage::Format_RGBA8888_Premultiplied);
-            for (const QRect &rect : damage.rects()) {
+            for (const QRect &rect : damage) {
                 auto scaledRect = QRect(rect.x() * scale, rect.y() * scale, rect.width() * scale, rect.height() * scale);
                 glTexSubImage2D(m_target, 0, scaledRect.x(), scaledRect.y(), scaledRect.width(), scaledRect.height(),
                                 GL_RGBA, GL_UNSIGNED_BYTE, im.copy(scaledRect).bits());
@@ -422,7 +422,7 @@ void AbstractEglTexture::updateTexture(WindowPixmap *pixmap)
         }
     } else {
         const QImage im = image.convertToFormat(QImage::Format_ARGB32_Premultiplied);
-        for (const QRect &rect : damage.rects()) {
+        for (const QRect &rect : damage) {
             auto scaledRect = QRect(rect.x() * scale, rect.y() * scale, rect.width() * scale, rect.height() * scale);
             glTexSubImage2D(m_target, 0, scaledRect.x(), scaledRect.y(), scaledRect.width(), scaledRect.height(),
                             GL_BGRA, GL_UNSIGNED_BYTE, im.copy(scaledRect).bits());

platformsupport/scenes/opengl/backend.cpp

@@ -106,7 +106,7 @@ bool OpenGLBackend::perScreenRendering() const
 void OpenGLBackend::copyPixels(const QRegion &region)
 {
     const int height = screens()->size().height();
-    foreach (const QRect &r, region.rects()) {
+    for (const QRect &r : region) {
         const int x0 = r.x();
         const int y0 = height - r.y() - r.height();
         const int x1 = r.x() + r.width();

plugins/platforms/x11/common/eglonxbackend.cpp

@@ -374,7 +374,7 @@ void EglOnXBackend::presentSurface(EGLSurface surface, const QRegion &damage, co
         }
     } else {
         // a part of the screen changed, and we can use eglPostSubBufferNV to copy the updated area
-        foreach (const QRect & r, damage.rects()) {
+        for (const QRect &r : damage) {
             eglPostSubBufferNV(eglDisplay(), surface, r.left(), screenGeometry.height() - r.bottom() - 1, r.width(), r.height());
         }
     }

plugins/platforms/x11/standalone/glxbackend.cpp

@@ -733,7 +733,7 @@ void GlxBackend::present()
             glXQueryDrawable(display(), glxWindow, GLX_BACK_BUFFER_AGE_EXT, (GLuint *) &m_bufferAge);
         }
     } else if (m_haveMESACopySubBuffer) {
-        foreach (const QRect & r, lastDamage().rects()) {
+        for (const QRect &r : lastDamage()) {
             // convert to OpenGL coordinates
             int y = screenSize.height() - r.y() - r.height();
             glXCopySubBufferMESA(display(), glxWindow, r.x(), y, r.width(), r.height());

plugins/platforms/x11/standalone/overlaywindow_x11.cpp

@@ -124,19 +124,9 @@ void OverlayWindowX11::setShape(const QRegion& reg)
     // and triggers something).
     if (reg == m_shape)
         return;
-    QVector< QRect > rects = reg.rects();
-    xcb_rectangle_t *xrects = new xcb_rectangle_t[rects.count()];
-    for (int i = 0;
-            i < rects.count();
-            ++i) {
-        xrects[ i ].x = rects[ i ].x();
-        xrects[ i ].y = rects[ i ].y();
-        xrects[ i ].width = rects[ i ].width();
-        xrects[ i ].height = rects[ i ].height();
-    }
+    const QVector<xcb_rectangle_t> xrects = Xcb::regionToRects(reg);
     xcb_shape_rectangles(connection(), XCB_SHAPE_SO_SET, XCB_SHAPE_SK_BOUNDING, XCB_CLIP_ORDERING_UNSORTED,
-                         m_window, 0, 0, rects.count(), xrects);
-    delete[] xrects;
+                         m_window, 0, 0, xrects.count(), xrects.data());
     setupInputShape(m_window);
     m_shape = reg;
 }

plugins/scenes/qpainter/scene_qpainter.cpp

@@ -153,7 +153,9 @@ qint64 SceneQPainter::paint(QRegion damage, ToplevelList toplevels)
 void SceneQPainter::paintBackground(QRegion region)
 {
     m_painter->setBrush(Qt::black);
-    m_painter->drawRects(region.rects());
+    for (const QRect &rect : region) {
+        m_painter->drawRect(rect);
+    }
 }
 
 void SceneQPainter::paintCursor()

plugins/scenes/xrender/scene_xrender.cpp

@@ -494,11 +494,16 @@ void SceneXrender::Window::performPaint(int mask, QRegion region, WindowPaintDat
         xform.matrix22 = DOUBLE_TO_FIXED(1.0 / yscale);
 
         // transform the shape for clipping in paintTransformedScreen()
-        QVector<QRect> rects = transformed_shape.rects();
-        for (int i = 0; i < rects.count(); ++i) {
-            QRect& r = rects[ i ];
-            r.setRect(qRound(r.x() * xscale), qRound(r.y() * yscale),
-                      qRound(r.width() * xscale), qRound(r.height() * yscale));
+        QVector<QRect> rects;
+        rects.reserve(transformed_shape.rectCount());
+        for (const QRect &rect : transformed_shape) {
+            const QRect transformedRect(
+                qRound(rect.x() * xscale),
+                qRound(rect.y() * yscale),
+                qRound(rect.width() * xscale),
+                qRound(rect.height() * yscale)
+            );
+            rects.append(transformedRect);
         }
         transformed_shape.setRects(rects.constData(), rects.count());
     }

screenedge.cpp

@@ -1008,7 +1008,7 @@ void ScreenEdges::recreateEdges()
     for (int i=0; i<screens()->count(); ++i) {
         const QRegion screen = QRegion(screens()->geometry(i)).subtracted(processedRegion);
         processedRegion += screen;
-        Q_FOREACH (const QRect &screenPart, screen.rects()) {
+        for (const QRect &screenPart : screen) {
             if (isLeftScreen(screenPart, fullArea)) {
                 // left most screen
                 createVerticalEdge(ElectricLeft, screenPart, fullArea);

toplevel.cpp

@@ -739,7 +739,7 @@ void Toplevel::addDamage(const QRegion &damage)
 {
     m_isDamaged = true;
     damage_region += damage;
-    for (const QRect &r : damage.rects()) {
+    for (const QRect &r : damage) {
         emit damaged(this, r);
     }
 }

xcbutils.h

@@ -1787,10 +1787,10 @@ static inline xcb_rectangle_t fromQt(const QRect &rect)
 
 static inline QVector<xcb_rectangle_t> regionToRects(const QRegion &region)
 {
-    const QVector<QRect> regionRects = region.rects();
-    QVector<xcb_rectangle_t> rects(regionRects.count());
-    for (int i=0; i<regionRects.count(); ++i) {
-        rects[i] = Xcb::fromQt(regionRects.at(i));
+    QVector<xcb_rectangle_t> rects;
+    rects.reserve(region.rectCount());
+    for (const QRect &rect : region) {
+        rects.append(Xcb::fromQt(rect));
     }
     return rects;
 }