Initial import of python-qt3

1 files changed, 233 insertions, 0 deletions

diff --git a/examples3/qmag.py b/examples3/qmag.py
new file mode 100755
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+++ b/examples3/qmag.py
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+#!/usr/bin/env python
+
+#****************************************************************************
+#** $Id: qmag.py,v 1.1 2002/06/20 18:52:31 phil Exp $
+#**
+#** Copyright (C) 1992-1998 Troll Tech AS.  All rights reserved.
+#**
+#** This file is part of an example program for PyQt.  This example
+#** program may be used, distributed and modified without limitation.
+#**
+#*****************************************************************************/
+
+import sys
+from qt import *
+
+TRUE  = 1
+FALSE = 0
+
+zoomfactors = ["100%","200%","300%","400%","500%","600%","700%","800%","1600%"]
+
+refreshrates = [
+    "No autorefresh", "50 per second", "4 per second", "3 per second",
+    "2 per second", "Every second", "Every two seconds", "Every three seconds",
+    "Every five seconds", "Every ten seconds"]
+
+timer = (0, 20, 250, 333, 500, 1000, 2000, 3000, 5000, 10000)
+
+class MagWidget(QWidget):
+    def __init__(self, qApp, parent = None, name = None):
+        self.qApp = qApp
+        QWidget.__init__(self, parent, name)
+        self.pm = QPixmap()     # pixmap magnified
+        self.p = QPixmap()      # pixmap
+        self.image = QImage()   # image of pixmap (for RGB)
+        self.z = 0              # zoom factor
+        self.r = 0              # autorefresh rate (index into refreshrates)
+        self.grabbing = FALSE   # TRUE if currently grabbing
+        self.grabx = -1
+        self.graby = -1
+
+        self.zoom = QComboBox(FALSE, self)
+        self.zoom.insertStrList(zoomfactors, len(zoomfactors))
+        self.connect(self.zoom, SIGNAL("activated(int)"),
+                     self.setZoom)
+
+        self.refresh = QComboBox(FALSE, self)
+        self.refresh.insertStrList(refreshrates, len(refreshrates))
+        self.connect(self.refresh, SIGNAL("activated(int)"),
+                     self.setRefresh)
+
+        x = 0
+        w = 0
+        h = 20
+        for s in zoomfactors:
+            cw = self.zoom.fontMetrics().width(s)
+            w = max(cw, w)
+        self.zoom.setGeometry(x, 2, w + 30, h)
+
+        x = w + 34
+        w = 0
+        for s in refreshrates:
+            cw = self.refresh.fontMetrics().width(s)
+            w = max(cw, w)
+        self.refresh.setGeometry(x, 2, w + 30, h)
+
+        self.saveButton = QPushButton(self)
+        self.connect(self.saveButton, SIGNAL("clicked()"), self.save)
+        self.saveButton.setText("Save")
+        self.saveButton.setGeometry(x + w + 30 + 2, 2,
+                    10 + self.saveButton.fontMetrics().width("Save"), h)
+
+        self.quitButton = QPushButton(self)
+        self.connect(self.quitButton, SIGNAL("clicked()"), self.qApp, SLOT("quit()"))
+        self.quitButton.setText("Quit")
+        self.quitButton.setGeometry(self.saveButton.geometry().right() + 2, 2,
+                    10 + self.quitButton.fontMetrics().width("Quit"), h)
+
+        self.rgb = QLabel(self)
+        self.rgb.setText("")
+        self.rgb.setAlignment(Qt.AlignVCenter)
+        self.rgb.resize(self.width(), self.rgb.fontMetrics().height() + 4)
+
+        self.yoffset = self.zoom.height() + 4 + self.rgb.height()
+        self.setMinimumSize(self.quitButton.geometry().topRight().x() + 2,
+                            self.yoffset + 20)
+        w = self.quitButton.geometry().topRight().x() + 2
+        self.resize(w, w)
+
+        self.setMouseTracking(TRUE)
+        self.grabx = self.qApp.desktop().width() / 2
+        self.graby = self.qApp.desktop().height() / 2
+        self.grabAround(QPoint(self.grabx, self.graby))
+
+        #self.zoom.setCurrentItem(1)    # grabAround sets zoom factor
+        #self.setZoom(1)
+        self.refresh.setCurrentItem(5)
+        self.setRefresh(5)
+
+    def setZoom(self, index):
+        if index == 8:
+            self.z = 16
+        else:
+            self.z = index + 1
+        self.grab()
+
+    def setRefresh(self, index):
+        self.r = index
+        self.killTimers()
+        if index and not self.grabbing:
+            #print "st:", timer[index]
+            self.startTimer(timer[index])
+
+    def save(self):
+        if not self.p.isNull():
+            self.killTimers()
+            fn = QFileDialog.getSaveFileName()
+            if not fn.isEmpty():
+                self.p.save(fn, "BMP")
+            if self.r:
+                self.startTimer(timer[self.r])
+
+    def grab(self):
+        if not self.isVisible() or self.grabx < 0 or self.graby < 0:
+            return
+
+        w = (self.width() + self.z - 1) / self.z
+        h = (self.height() + self.z - 1 - self.yoffset) / self.z
+
+        if w < 1 or h < 1:
+            return
+
+        x = self.grabx - w / 2
+        y = self.graby - h / 2
+
+        if x + w > QApplication.desktop().width():
+            x = QApplication.desktop().width() - w
+        elif x < 0:
+            x = 0
+
+        if y + h > QApplication.desktop().height():
+            y = QApplication.desktop().height() - h
+        elif y < 0:
+            y = 0
+
+        self.p = QPixmap.grabWindow(QApplication.desktop().winId(), x, y, w, h)
+        self.image = self.p.convertToImage()
+        m = QWMatrix()
+        #print "z:", self.z
+        m.scale(float(self.z), float(self.z))
+        self.pm = self.p.xForm(m)
+        self.repaint(FALSE)
+
+    def paintEvent(self, e):
+        if not self.pm.isNull():
+            paint = QPainter(self)
+            paint.drawPixmap(0, self.zoom.height() + 4, self.pm,
+                             0, 0, self.width(), self.height() - self.yoffset)
+
+    def mousePressEvent(self, e):
+        if not self.grabbing:
+            self.grabbing = TRUE
+            self.killTimers()
+            self.grabMouse(Qt.crossCursor)
+            self.grabx = -1
+            self.graby = -1
+        else:
+            self.grabx = self.mapToGlobal(e.pos()).x()
+            self.graby = self.mapToGlobal(e.pos()).y()
+
+    def mouseReleaseEvent(self, e):
+        if self.grabbing and self.grabx >= 0 and self.graby >= 0:
+            self.grabbing = FALSE
+            self.grabAround(e.pos())
+            self.releaseMouse()
+
+    def grabAround(self, pos):
+        rx = self.mapToGlobal(pos).x()
+        ry = self.mapToGlobal(pos).y()
+        w = abs(rx - self.grabx)
+        h = abs(ry - self.graby)
+        if w > 10 and h > 10:
+            pz = 1
+            while w*pz*h*pz < self.width()*(self.height()-self.yoffset) and \
+                  w*pz < QApplication.desktop().width() and \
+                  h*pz < QApplication.desktop().height():
+                pz += 1
+            if (w*pz*h*pz - self.width()*(self.height()-self.yoffset)) > \
+                (self.width()*(self.height()-self.yoffset) - w*(pz-1)*h*(pz-1)):
+                pz -= 1
+            if pz < 1:
+                pz = 1
+            elif pz > 8:
+                pz = 8
+            self.zoom.setCurrentItem(pz-1)
+            self.z = pz
+            self.grabx = min(rx, self.grabx) + w / 2
+            self.graby = min(ry, self.graby) + h / 2
+            #self.resize(w*self.z, h*self.z*self.yoffset)
+        self.grab()
+
+    def mouseMoveEvent(self, e):
+        if self.grabbing or self.pm.isNull() or \
+            e.pos().y() > self.height() - self.zoom.fontMetrics().height() - 4 or \
+            e.pos().y() < self.zoom.height() + 4:
+            self.rgb.setText("")
+        else:
+            x = e.pos().x() / self.z
+            y = (e.pos().y() - self.zoom.height() - 4) / self.z
+            pixelinfo = ""
+            if self.image.valid(x, y):
+                px = self.image.pixel(x, y)
+                pixelinfo = "%3d,%3d,%3d  #%02x%02x%02x" % (
+                        qRed(px), qGreen(px), qBlue(px),
+                        qRed(px), qGreen(px), qBlue(px))
+            self.rgb.setText("x=%d, y=%d  %s" % \
+                        (x + self.grabx, y + self.graby, pixelinfo))
+
+    def focusOutEvent(self, e):
+        self.rgb.setText("")
+
+    def timerEvent(self, e):
+        self.grab()
+
+    def resizeEvent(self, e):
+        self.rgb.setGeometry(0, self.height() - self.rgb.height(),
+                             self.width(), self.rgb.height())
+
+if __name__=='__main__':
+    app = QApplication( sys.argv )
+    m = MagWidget(app)
+    app.setMainWidget(m)
+    m.show()
+    app.exec_loop()