animated busy pointer

svn path=/trunk/kdenetwork/kmail/; revision=225

kbusyptr.cpp

@@ -0,0 +1,139 @@
+// animated busy pointer
+
+#include "kbusyptr.h"
+#include <kapp.h>
+#include <qcursor.h>
+#include <qtimer.h>
+
+//-----------------------------------------------------------------------------
+KBusyPtr :: KBusyPtr (KApplication* aApp)
+{
+  app = aApp;
+  if (!app) printf ("KBusyPtr error: KApplication required\n");
+
+  busyLevel  = 0;
+  numCursors = 0;
+  frameDelay = 500;
+  cursorList = NULL;
+  bitmapList = NULL;
+
+  loadCursor("./pics/stopwatch.xbm","./pics/stopwatchMask.xbm");
+
+  //connect(timer, SIGNAL(timeout()), this, SLOT(timeout()));
+}
+
+
+//-----------------------------------------------------------------------------
+KBusyPtr :: ~KBusyPtr()
+{
+  if (cursorList) delete cursorList;
+  if (bitmapList) delete bitmapList;
+  cursorList = NULL;
+  bitmapList = NULL;
+}
+
+
+//-----------------------------------------------------------------------------
+void KBusyPtr :: busy (void)
+{
+  KAlarmTimer* kat;
+
+  if (busyLevel <= 0)
+  {
+    currentCursor = 0;
+    if (!cursorList)
+    {
+      app->setOverrideCursor(waitCursor);
+    }
+    else
+    {
+      app->setOverrideCursor(cursorList[currentCursor]);
+      start(500);
+    }
+  }
+  busyLevel++;
+}
+
+
+//-----------------------------------------------------------------------------
+void KBusyPtr :: idle (void)
+{
+  busyLevel--;
+  if (busyLevel < 0) busyLevel = 0;
+
+  if (busyLevel <= 0)
+  {
+    stop();
+    app->restoreOverrideCursor();
+  }
+}
+
+
+//-----------------------------------------------------------------------------
+void KBusyPtr :: timerEvent (void)
+{
+  if (busyLevel <= 0) return;
+
+  if (++currentCursor >= numCursors) currentCursor = 0;
+
+  if (cursorList)
+    app->setOverrideCursor(cursorList[currentCursor], TRUE);
+}
+
+
+//-----------------------------------------------------------------------------
+bool KBusyPtr :: loadBitmap (QBitmap& bm, const QString& filename)
+{
+  QString f;
+  bool rc;
+
+  if (filename[0]=='/' || filename[0]=='.')
+  {
+    f = filename;
+  }
+  else 
+  {
+    f = kapp->kdedir();
+    f.detach();
+    f += "/lib/pics/";
+    f += filename;
+  }
+  rc = bm.load(f);
+  if (!rc) printf ("ERROR: cannot load bitmap %s\n", f.data());
+  return rc;
+}
+
+
+//-----------------------------------------------------------------------------
+void KBusyPtr :: loadCursor (const char* cursorName,const char* maskName)
+{
+  int i, ix, iy, numX, numY, x, y;
+  QBitmap map, mask;
+  QBitmap cmap(16,16), cmask(16,16);
+
+  numCursors = 0;
+
+  if (!loadBitmap(map,cursorName)) return;
+  if (!loadBitmap(mask,maskName)) return;
+
+  numX = map.width() >> 4;
+  numY = map.height() >> 4;
+  numCursors = numX * numY;
+
+  if (bitmapList) delete[] bitmapList;
+  bitmapList = new QBitmap[numCursors](16,16);
+  if (cursorList) delete[] cursorList;
+  cursorList = new QCursor[numCursors];
+
+  for (i=0,iy=0,y=0; iy<numY; iy++, y+=16)
+  {
+    for (ix=0,x=0; ix<numX; ix++, x+=16, i++)
+    {
+      bitBlt(&cmap, 0, 0, &map, x, y, 16, 16);
+      bitBlt(&cmask, 0, 0, &mask, x, y, 16, 16);
+      cursorList[i] = QCursor(cmap, cmask, 8, 8);
+    }
+  }
+}
+
+#include "kbusyptr.moc"

kbusyptr.h

@@ -0,0 +1,42 @@
+/* animated busy pointer handling
+ */
+#ifndef kbusyptr_h_
+#define kbusyptr_h_
+
+#include "kalarmtimer.h"
+
+class KApplication;
+class QCursor;
+
+class KBusyPtr: public KAlarmTimer
+{
+  Q_OBJECT;
+
+public:
+  KBusyPtr(KApplication*);
+  virtual ~KBusyPtr();
+
+  virtual void busy(void);
+  virtual void idle(void);
+
+  virtual void loadCursor(const char* cursorName, const char* maskName);
+	// Load cursor from given bitmap files. When the filename
+	// is relative the $KDEDIR/lib/pics directory is searched
+
+protected:
+  virtual void timerEvent(void);
+
+private:
+  bool loadBitmap(QBitmap& bitmap, const QString& fileName);
+
+protected:
+  KApplication* app;
+  int busyLevel;
+  int numCursors;
+  int frameDelay;
+  int currentCursor;
+  QCursor* cursorList;
+  QBitmap* bitmapList;
+};
+
+#endif /*kbusyptr_h_*/