src/plugins/platforms/wayland/qwaylanddecoration.cpp

   1 #include "qwaylanddecoration.h"
   2
   3 #include "qwaylandwindow.h"
   4 #include "qwaylandshmbackingstore.h"
   5 #include "qwaylandshellsurface.h"
   6 #include "qwaylandinputdevice.h"
   7
   8 #include <QtGui/QGuiApplication>
   9 #include <QtGui/QCursor>
  10 #include <QtGui/QPainter>
  11 #include <QtGui/QRadialGradient>
  12 QWaylandDecoration::QWaylandDecoration(QWindow *window, QWaylandShmBackingStore *backing_store)
  13     : m_window(window)
  14     , m_wayland_window(static_cast<QWaylandWindow *>(window->handle()))
  15     , m_backing_store(backing_store)
  16     , m_margins(3,30,3,3)
  17     , m_hasSetCursor(false)
  18     , m_mouseButtons(Qt::NoButton)
  19 {
  20     m_wayland_window->setDecoration(this);
  21     QTextOption option(Qt::AlignHCenter | Qt::AlignVCenter);
  22     option.setWrapMode(QTextOption::NoWrap);
  23     m_windowTitle.setTextOption(option);
  24 }
  25
  26 QWaylandDecoration::~QWaylandDecoration()
  27 {
  28     m_wayland_window->setDecoration(0);
  29 }
  30
  31 void QWaylandDecoration::paintDecoration()
  32 {
  33     QRect surfaceRect(QPoint(), m_backing_store->entireSurface()->size());
  34     QRect clips[] =
  35     {
  36         QRect(0, 0, surfaceRect.width(), m_margins.top()),
  37         QRect(0, surfaceRect.height() - m_margins.bottom(), surfaceRect.width(), m_margins.bottom()),
  38         QRect(0, m_margins.top(), m_margins.left(), surfaceRect.height() - m_margins.top() - m_margins.bottom()),
  39         QRect(surfaceRect.width() - m_margins.right(), m_margins.top(), m_margins.left(), surfaceRect.height() - m_margins.top() - m_margins.bottom())
  40     };
  41     QRect top = clips[0];
  42     QPainter p(m_backing_store->entireSurface());
  43     p.setRenderHint(QPainter::Antialiasing);
  44     QPoint gradCenter(top.center()+ QPoint(30,60));
  45     QRadialGradient grad(gradCenter, top.width() / 2, gradCenter);
  46     QColor base(90, 90, 100);
  47     grad.setColorAt(1, base);
  48     grad.setColorAt(0, base.lighter(123));
  49     QPainterPath roundedRect;
  50     roundedRect.addRoundedRect(surfaceRect, 6, 6);
  51     for (int i = 0; i < 4; ++i) {
  52         p.save();
  53         p.setClipRect(clips[i]);
  54         p.fillPath(roundedRect, grad);
  55         p.restore();
  56     }
  57
  58
  59     QString windowTitleText = m_window->windowTitle();
  60     if (!windowTitleText.isEmpty()) {
  61         if (m_windowTitle.text() != windowTitleText) {
  62             m_windowTitle.setText(windowTitleText);
  63             m_windowTitle.prepare();
  64         }
  65         p.save();
  66         p.setClipRect(top);
  67         p.setPen(QColor(0xee,0xee,0xee));
  68         QSizeF size = m_windowTitle.size();
  69         int dx = (top.width() - size.width()) /2;
  70         int dy = (top.height()- size.height()) /2;
  71         QPoint windowTitlePoint(top.topLeft().x() + dx,
  72                  top.topLeft().y() + dy);
  73         p.drawStaticText(windowTitlePoint,m_windowTitle);
  74         p.restore();
  75     }
  76 }
  77
  78 void QWaylandDecoration::handleMouse(QWaylandInputDevice *inputDevice, const QPointF &local, const QPointF &global, Qt::MouseButtons b, Qt::KeyboardModifiers mods)
  79
  80 {
  81     Q_UNUSED(global);
  82     //figure out what area mouse is in
  83     if (local.y() <= m_margins.top()) {
  84         processMouseTop(inputDevice,local,b,mods);
  85     } else if (local.y() > m_window->height() - m_margins.bottom()) {
  86         processMouseBottom(inputDevice,local,b,mods);
  87     } else if (local.x() <= m_margins.left()) {
  88         processMouseLeft(inputDevice,local,b,mods);
  89     } else if (local.x() > m_window->width() - m_margins.right()) {
  90         processMouseRight(inputDevice,local,b,mods);
  91     } else {
  92         restoreMouseCursor();
  93     }
  94     m_mouseButtons = b;
  95 }
  96
  97 void QWaylandDecoration::restoreMouseCursor()
  98 {
  99     if (m_hasSetCursor) {
 100         QGuiApplication::restoreOverrideCursor();
 101         m_hasSetCursor = false;
 102     }
 103 }
 104
 105 bool QWaylandDecoration::inMouseButtonPressedState() const
 106 {
 107     return m_mouseButtons & Qt::NoButton;
 108 }
 109
 110 void QWaylandDecoration::startResize(QWaylandInputDevice *inputDevice, enum wl_shell_surface_resize resize, Qt::MouseButtons buttons)
 111 {
 112     if (isLeftClicked(buttons)) {
 113         m_wayland_window->shellSurface()->resize(inputDevice, resize);
 114         inputDevice->removeMouseButtonFromState(Qt::LeftButton);
 115     }
 116 }
 117
 118 void QWaylandDecoration::startMove(QWaylandInputDevice *inputDevice, Qt::MouseButtons buttons)
 119 {
 120     if (isLeftClicked(buttons)) {
 121         m_wayland_window->shellSurface()->move(inputDevice);
 122         inputDevice->removeMouseButtonFromState(Qt::LeftButton);
 123     }
 124 }
 125
 126 void QWaylandDecoration::processMouseTop(QWaylandInputDevice *inputDevice, const QPointF &local, Qt::MouseButtons b, Qt::KeyboardModifiers mods)
 127 {
 128     Q_UNUSED(mods);
 129     if (local.y() <= m_margins.bottom()) {
 130         if (local.x() <= margins().left()) {
 131             //top left bit
 132             startResize(inputDevice,WL_SHELL_SURFACE_RESIZE_TOP_LEFT,b);
 133         } else if (local.x() > m_window->width() - margins().right()) {
 134             //top right bit
 135             startResize(inputDevice,WL_SHELL_SURFACE_RESIZE_TOP_RIGHT,b);
 136         } else {
 137             //top reszie bit
 138             overrideCursor(Qt::SplitVCursor);
 139             startResize(inputDevice,WL_SHELL_SURFACE_RESIZE_TOP,b);
 140         }
 141     } else {
 142         restoreMouseCursor();
 143         startMove(inputDevice,b);
 144     }
 145
 146 }
 147
 148 void QWaylandDecoration::processMouseBottom(QWaylandInputDevice *inputDevice, const QPointF &local, Qt::MouseButtons b, Qt::KeyboardModifiers mods)
 149 {
 150     Q_UNUSED(mods);
 151     if (local.x() <= margins().left()) {
 152         //bottom left bit
 153         startResize(inputDevice, WL_SHELL_SURFACE_RESIZE_BOTTOM_LEFT,b);
 154     } else if (local.x() > m_window->width() - margins().right()) {
 155         //bottom right bit
 156             startResize(inputDevice, WL_SHELL_SURFACE_RESIZE_BOTTOM_RIGHT,b);
 157     } else {
 158         //bottom bit
 159         overrideCursor(Qt::SplitVCursor);
 160         startResize(inputDevice,WL_SHELL_SURFACE_RESIZE_BOTTOM,b);
 161     }
 162 }
 163
 164 void QWaylandDecoration::processMouseLeft(QWaylandInputDevice *inputDevice, const QPointF &local, Qt::MouseButtons b, Qt::KeyboardModifiers mods)
 165 {
 166     Q_UNUSED(local);
 167     Q_UNUSED(mods);
 168     overrideCursor(Qt::SplitHCursor);
 169     startResize(inputDevice,WL_SHELL_SURFACE_RESIZE_LEFT,b);
 170 }
 171
 172 void QWaylandDecoration::processMouseRight(QWaylandInputDevice *inputDevice, const QPointF &local, Qt::MouseButtons b, Qt::KeyboardModifiers mods)
 173 {
 174     Q_UNUSED(local);
 175     Q_UNUSED(mods);
 176     overrideCursor(Qt::SplitHCursor);
 177     startResize(inputDevice, WL_SHELL_SURFACE_RESIZE_RIGHT,b);
 178 }
 179
 180 bool QWaylandDecoration::isLeftClicked(Qt::MouseButtons newMouseButtonState)
 181 {
 182     if ((!m_mouseButtons & Qt::LeftButton) && (newMouseButtonState & Qt::LeftButton))
 183         return true;
 184     return false;
 185 }
 186
 187 bool QWaylandDecoration::isLeftReleased(Qt::MouseButtons newMouseButtonState)
 188 {
 189     if ((m_mouseButtons & Qt::LeftButton) && !(newMouseButtonState & Qt::LeftButton))
 190         return true;
 191     return false;
 192 }