#include "colorpickerwidget.h"
#include <QMouseEvent>
-#include <QPushButton>
+#include <QHBoxLayout>
+#include <QToolButton>
+#include <QLabel>
+#include <QSpinBox>
#include <QDesktopWidget>
+#include <QFrame>
#include <KApplication>
-#include <KColorDialog>
#include <KIcon>
+#include <KDebug>
#include <KLocalizedString>
#ifdef Q_WS_X11
-#include <X11/Xlib.h>
#include <X11/Xutil.h>
-#include <QX11Info>
#include <fixx11h.h>
+#endif
-class KCDPickerFilter: public QWidget
+MyFrame::MyFrame(QWidget* parent) :
+ QFrame(parent)
{
-public:
- KCDPickerFilter(QWidget* parent): QWidget(parent) {}
-
- virtual bool x11Event(XEvent* event) {
- if (event->type == ButtonRelease) {
- QMouseEvent e(QEvent::MouseButtonRelease, QPoint(),
- QPoint(event->xmotion.x_root, event->xmotion.y_root) , Qt::NoButton, Qt::NoButton, Qt::NoModifier);
- QApplication::sendEvent(parentWidget(), &e);
- return true;
- }
- return false;
- }
-};
-#endif
+ setFrameStyle(QFrame::Box | QFrame::Plain);
+ setWindowOpacity(0.5);
+ setWindowFlags(Qt::FramelessWindowHint);
+}
+
+// virtual
+void MyFrame::hideEvent ( QHideEvent * event )
+{
+ QFrame::hideEvent(event);
+ // We need a timer here since hiding the frame will trigger a monitor refresh timer that will
+ // repaint the monitor after 70 ms.
+ QTimer::singleShot(250, this, SIGNAL(getColor()));
+}
ColorPickerWidget::ColorPickerWidget(QWidget *parent) :
m_filterActive(false)
{
#ifdef Q_WS_X11
- m_filter = 0;
+ m_image = NULL;
#endif
- QPushButton *button = new QPushButton(this);
+ QHBoxLayout *layout = new QHBoxLayout(this);
+ layout->setContentsMargins(0, 0, 0, 0);
+
+ QToolButton *button = new QToolButton(this);
button->setIcon(KIcon("color-picker"));
- button->setToolTip(i18n("Pick a color on the screen"));
+ button->setToolTip("<p>" + i18n("Pick a color on the screen. By pressing the mouse button and then moving your mouse you can select a section of the screen from which to get an average color.") + "</p>");
+ button->setAutoRaise(true);
connect(button, SIGNAL(clicked()), this, SLOT(slotSetupEventFilter()));
+
+ layout->addWidget(button);
+ setFocusPolicy(Qt::StrongFocus);
+
+ m_grabRectFrame = new MyFrame();
+ m_grabRectFrame->hide();
}
ColorPickerWidget::~ColorPickerWidget()
{
+ delete m_grabRectFrame;
+ if (m_filterActive) removeEventFilter(this);
+}
+
+void ColorPickerWidget::slotGetAverageColor()
+{
+ disconnect(m_grabRectFrame, SIGNAL(getColor()), this, SLOT(slotGetAverageColor()));
+ m_grabRect = m_grabRect.normalized();
+
+ int numPixel = m_grabRect.width() * m_grabRect.height();
+
+ int sumR = 0;
+ int sumG = 0;
+ int sumB = 0;
+
+ // only show message for larger rects because of the overhead displayMessage creates
+ if (numPixel > 40000)
+ emit displayMessage(i18n("Requesting color information..."), 0);
+
+ /*
+ Only getting the image once for the whole rect
+ results in a vast speed improvement.
+ */
#ifdef Q_WS_X11
- if (m_filterActive && kapp)
- kapp->removeX11EventFilter(m_filter);
+ Window root = RootWindow(QX11Info::display(), QX11Info::appScreen());
+ m_image = XGetImage(QX11Info::display(), root, m_grabRect.x(), m_grabRect.y(), m_grabRect.width(), m_grabRect.height(), -1, ZPixmap);
+#else
+ QWidget *desktop = QApplication::desktop();
+ m_image = QPixmap::grabWindow(desktop->winId(), m_grabRect.x(), m_grabRect.y(), m_grabRect.width(), m_grabRect.height()).toImage();
#endif
+
+ for (int x = 0; x < m_grabRect.width(); ++x) {
+ for (int y = 0; y < m_grabRect.height(); ++y) {
+ QColor color = grabColor(QPoint(x, y), false);
+ sumR += color.red();
+ sumG += color.green();
+ sumB += color.blue();
+ }
+
+ // Warning: slows things down, so don't do it for every pixel (the inner for loop)
+ if (numPixel > 40000)
+ emit displayMessage(i18n("Requesting color information..."), (int)(x * m_grabRect.height() / (qreal)numPixel * 100));
+ }
+
+#ifdef Q_WS_X11
+ XDestroyImage(m_image);
+ m_image = NULL;
+#endif
+
+ if (numPixel > 40000)
+ emit displayMessage(i18n("Calculated average color for rectangle."), -1);
+
+ emit colorPicked(QColor(sumR / numPixel, sumG / numPixel, sumB / numPixel));
+ emit disableCurrentFilter(false);
}
-void ColorPickerWidget::mouseReleaseEvent(QMouseEvent* event)
+void ColorPickerWidget::mousePressEvent(QMouseEvent* event)
+{
+ if (event->button() != Qt::LeftButton) {
+ closeEventFilter();
+ emit disableCurrentFilter(false);
+ event->accept();
+ return;
+ }
+
+ if (m_filterActive) {
+ m_grabRect = QRect(event->globalPos(), QSize(0, 0));
+ m_grabRectFrame->setGeometry(m_grabRect);
+ m_grabRectFrame->show();
+ }
+
+ QWidget::mousePressEvent(event);
+}
+
+void ColorPickerWidget::mouseReleaseEvent(QMouseEvent *event)
{
if (m_filterActive) {
closeEventFilter();
- emit colorPicked(KColorDialog::grabColor(event->globalPos()));
+
+ m_grabRect.setWidth(event->globalX() - m_grabRect.x());
+ m_grabRect.setHeight(event->globalY() - m_grabRect.y());
+
+ if (m_grabRect.width() * m_grabRect.height() == 0) {
+ m_grabRectFrame->hide();
+ emit colorPicked(grabColor(event->globalPos()));
+ emit disableCurrentFilter(false);
+ } else {
+ // delay because m_grabRectFrame does not hide immediately
+ connect(m_grabRectFrame, SIGNAL(getColor()), this, SLOT(slotGetAverageColor()));
+ m_grabRectFrame->hide();
+ }
return;
}
QWidget::mouseReleaseEvent(event);
}
-void ColorPickerWidget::keyPressEvent(QKeyEvent* event)
+void ColorPickerWidget::mouseMoveEvent(QMouseEvent* event)
{
if (m_filterActive) {
- if (event->key() == Qt::Key_Escape)
- closeEventFilter();
- event->accept();
- return;
+ m_grabRect.setWidth(event->globalX() - m_grabRect.x());
+ m_grabRect.setHeight(event->globalY() - m_grabRect.y());
+ m_grabRectFrame->setGeometry(m_grabRect.normalized());
}
- QWidget::keyPressEvent(event);
+ QWidget::mouseMoveEvent(event);
}
void ColorPickerWidget::slotSetupEventFilter()
{
+ emit disableCurrentFilter(true);
m_filterActive = true;
-#ifdef Q_WS_X11
- m_filter = new KCDPickerFilter(this);
- kapp->installX11EventFilter(m_filter);
-#endif
- grabMouse(Qt::CrossCursor);
+ setFocus();
+ installEventFilter(this);
+ grabMouse(QCursor(KIcon("color-picker").pixmap(22, 22), 0, 21));
grabKeyboard();
}
void ColorPickerWidget::closeEventFilter()
{
m_filterActive = false;
-#ifdef Q_WS_X11
- kapp->removeX11EventFilter(m_filter);
- delete m_filter;
- m_filter = 0;
-#endif
releaseMouse();
releaseKeyboard();
+ removeEventFilter(this);
+}
+
+bool ColorPickerWidget::eventFilter(QObject *object, QEvent *event)
+{
+ // Close color picker on any key press
+ if (event->type() == QEvent::KeyPress || event->type() == QEvent::ShortcutOverride) {
+ closeEventFilter();
+ emit disableCurrentFilter(false);
+ event->setAccepted(true);
+ return true;
+ }
+ return QObject::eventFilter(object, event);
+
+}
+
+QColor ColorPickerWidget::grabColor(const QPoint &p, bool destroyImage)
+{
+#ifdef Q_WS_X11
+ /*
+ we use the X11 API directly in this case as we are not getting back a valid
+ return from QPixmap::grabWindow in the case where the application is using
+ an argb visual
+ */
+ if( !qApp->desktop()->geometry().contains( p ))
+ return QColor();
+ unsigned long xpixel;
+ if (m_image == NULL) {
+ Window root = RootWindow(QX11Info::display(), QX11Info::appScreen());
+ m_image = XGetImage(QX11Info::display(), root, p.x(), p.y(), 1, 1, -1, ZPixmap);
+ xpixel = XGetPixel(m_image, 0, 0);
+ } else {
+ xpixel = XGetPixel(m_image, p.x(), p.y());
+ }
+ if (destroyImage) {
+ XDestroyImage(m_image);
+ m_image = 0;
+ }
+ XColor xcol;
+ xcol.pixel = xpixel;
+ xcol.flags = DoRed | DoGreen | DoBlue;
+ XQueryColor(QX11Info::display(),
+ DefaultColormap(QX11Info::display(), QX11Info::appScreen()),
+ &xcol);
+ return QColor::fromRgbF(xcol.red / 65535.0, xcol.green / 65535.0, xcol.blue / 65535.0);
+#else
+ if (m_image.isNull()) {
+ QWidget *desktop = QApplication::desktop();
+ QPixmap pm = QPixmap::grabWindow(desktop->winId(), p.x(), p.y(), 1, 1);
+ QImage i = pm.toImage();
+ return i.pixel(0, 0);
+ } else {
+ return m_image.pixel(p.x(), p.y());
+ }
+#endif
}
#include "colorpickerwidget.moc"
projects / kdenlive / blobdiff