Add repaint optimization to TQProgressBar

This optimization makes TQProgressBar::setProgress() only repaint itself
if stepping to the new progress would cause a graphical change. This means
that for a width W and a total number of steps S, it will repaint itself
'W' times (every 'S/W' steps) instead of 'S' times (every step) as it is
right now.

diff --git a/src/widgets/ntqprogressbar.h b/src/widgets/ntqprogressbar.h
index ca73cd8..ca90da2 100644
--- a/src/widgets/ntqprogressbar.h
+++ b/src/widgets/ntqprogressbar.h
@@ -65,6 +65,7 @@
 public:
     TQProgressBar( TQWidget* parent=0, const char* name=0, WFlags f=0 );
     TQProgressBar( int totalSteps, TQWidget* parent=0, const char* name=0, WFlags f=0 );
+    virtual ~TQProgressBar();
 
     int		totalSteps() const;
     int		progress()   const;
@@ -95,6 +96,7 @@
     virtual bool setIndicator( TQString & progress_str, int progress,
 			       int totalSteps );
     void styleChange( TQStyle& );
+    bool	requireRepaint( int newProgress ) const;
 
 private:
     int		total_steps;
diff --git a/src/widgets/qprogressbar.cpp b/src/widgets/qprogressbar.cpp
index d1300d3..3eb0db0 100644
--- a/src/widgets/qprogressbar.cpp
+++ b/src/widgets/qprogressbar.cpp
@@ -51,6 +51,14 @@
 #endif
 #include <limits.h>
 
+class TQProgressBarPrivate
+{
+    public:
+        TQProgressBarPrivate() : last_painted_progress( 0 ) { }
+
+    int last_painted_progress;
+};
+
 /*!
     \class TQProgressBar ntqprogressbar.h
     \brief The TQProgressBar widget provides a horizontal progress bar.
@@ -103,7 +111,7 @@
       center_indicator( TRUE ),
       auto_indicator( TRUE ),
       percentage_visible( TRUE ),
-      d( 0 ),
+      d( new TQProgressBarPrivate ),
       m_orientation( Horizontal )
 {
     setSizePolicy( TQSizePolicy( TQSizePolicy::Expanding, TQSizePolicy::Fixed ) );
@@ -135,11 +143,21 @@
       center_indicator( TRUE ),
       auto_indicator( TRUE ),
       percentage_visible( TRUE ),
-      d( 0 ),
+      d( new TQProgressBarPrivate ),
       m_orientation( Horizontal )
 {
     setSizePolicy( TQSizePolicy( TQSizePolicy::Expanding, TQSizePolicy::Fixed ) );
     initFrame();
+}
+
+
+/*!
+    Destroys the object and frees any allocated ressources.
+*/
+ 
+TQProgressBar::~TQProgressBar()
+{
+    delete d;
 }
 
 
@@ -194,11 +212,16 @@
 	 progress < 0 || ( ( progress > total_steps ) && total_steps ) )
 	return;
 
+    const bool needRepaint = isVisible() && requireRepaint( progress );
+
     progress_val = progress;
 
     setIndicator( progress_str, progress_val, total_steps );
 
-    repaint( FALSE );
+    if ( needRepaint ) {
+        repaint( FALSE );
+        d->last_painted_progress = progress;
+    }
 
 #if defined(QT_ACCESSIBILITY_SUPPORT)
     TQAccessible::updateAccessibility( this, 0, TQAccessible::ValueChanged );
@@ -330,6 +353,32 @@
     TQFrame::styleChange( old );
 }
 
+/*!
+    This method returns whether changing the progress to the \a newValue
+    would require a repaint of the progress bar. This allows efficient
+    repainting.
+*/
+bool TQProgressBar::requireRepaint( int newProgress ) const
+{
+    if ( newProgress == progress_val ||
+         newProgress == d->last_painted_progress ) {
+        return false;
+    }
+
+    const int width = contentsRect().width();
+    if ( width == 0 ) {
+        return false;
+    }
+
+    float progressPerPixel = 1.0;
+    if ( total_steps > width ) {
+        progressPerPixel = float( total_steps ) / float( width );
+    }
+
+    const int delta = d->last_painted_progress - newProgress;
+    return TQABS( delta ) >= progressPerPixel;
+}
+
 TQt::Orientation TQProgressBar::orientation() const
 {
     return m_orientation;

Remove unnecessary scrollbar in TQIconView

Test case (using konqueror icon view):
- The first icons are being shown (no scrollbar yet)
- When there is no space left, a vertical scrollbar is needed
- The vertical scrollbar may cover the right edge of the icons
(in the last column) => an horizontal scrollbar is needed :-(

Solution:
When using ScrollBarMode::Auto, prevent TQt from drawing icons on the
scrollbar area (before the scrollbar is shown).

Related to KDE bug #69589

diff --git a/src/iconview/ntqiconview.h b/src/iconview/ntqiconview.h
index e45cfca..3408582 100644
--- a/src/iconview/ntqiconview.h
+++ b/src/iconview/ntqiconview.h
@@ -504,6 +504,8 @@
 			const TQPoint &relativeTo,
 			const TQIconViewItem *item ) const;
     TQBitmap mask( TQPixmap *pix ) const;
+    int visibleWidthSB() const;
+    int visibleHeightSB() const;
 
     TQIconViewPrivate *d;
 
diff --git a/src/iconview/qiconview.cpp b/src/iconview/qiconview.cpp
index 236768d..3098821 100644
--- a/src/iconview/qiconview.cpp
+++ b/src/iconview/qiconview.cpp
@@ -1107,7 +1107,7 @@
 
     if ( view ) {
 	if ( TQRect( view->contentsX(), view->contentsY(),
-		    view->visibleWidth(), view->visibleHeight() ).
+		    view->visibleWidthSB(), view->visibleHeightSB() ).
 	     intersects( oR ) )
 	    view->repaintContents( oR.x() - 1, oR.y() - 1,
 				   oR.width() + 2, oR.height() + 2, FALSE );
@@ -1159,7 +1159,7 @@
 
     if ( view ) {
 	if ( TQRect( view->contentsX(), view->contentsY(),
-		    view->visibleWidth(), view->visibleHeight() ).
+		    view->visibleWidthSB(), view->visibleHeightSB() ).
 	     intersects( oR ) )
 	    view->repaintContents( oR.x() - 1, oR.y() - 1,
 				   oR.width() + 2, oR.height() + 2, FALSE );
@@ -1195,7 +1195,7 @@
 
     if ( view ) {
 	if ( TQRect( view->contentsX(), view->contentsY(),
-		    view->visibleWidth(), view->visibleHeight() ).
+		    view->visibleWidthSB(), view->visibleHeightSB() ).
 	     intersects( oR ) )
 	    view->repaintContents( oR.x() - 1, oR.y() - 1,
 				   oR.width() + 2, oR.height() + 2, FALSE );
@@ -1263,7 +1263,7 @@
 
 	    if ( view ) {
 		if ( TQRect( view->contentsX(), view->contentsY(),
-			    view->visibleWidth(), view->visibleHeight() ).
+			    view->visibleWidthSB(), view->visibleHeightSB() ).
 		     intersects( oR ) )
 		    view->repaintContents( oR.x() - 1, oR.y() - 1,
 					   oR.width() + 2, oR.height() + 2, FALSE );
@@ -5638,8 +5638,8 @@
 	}
 	item->dirty = FALSE;
     } else {
-	TQRegion r( TQRect( 0, 0, TQMAX( contentsWidth(), visibleWidth() ),
-			  TQMAX( contentsHeight(), visibleHeight() ) ) );
+	TQRegion r( TQRect( 0, 0, TQMAX( contentsWidth(), visibleWidthSB() ),
+			  TQMAX( contentsHeight(), visibleHeightSB() ) ) );
 
 	TQIconViewItem *i = d->firstItem;
 	int y = -1;
@@ -5902,7 +5902,7 @@
 	    TQIconViewItem *item = begin;
 	    for (;;) {
 		x += d->spacing + item->width();
-		if ( x > visibleWidth() && item != begin ) {
+		if ( x > visibleWidthSB() && item != begin ) {
 		    item = item->prev;
 		    while (item && (item->isVisible() == FALSE)) {
 			item = item->prev;
@@ -5933,7 +5933,7 @@
 		int x;
 		if ( item == begin ) {
 		    if ( reverse )
-			x = visibleWidth() - d->spacing - item->width();
+			x = visibleWidthSB() - d->spacing - item->width();
 		    else
 			x = d->spacing;
 		} else {
@@ -5969,7 +5969,7 @@
 		    i += r;
 		    x = i * d->rastX + sp * d->spacing;
 		}
-		if ( x > visibleWidth() && item != begin ) {
+		if ( x > visibleWidthSB() && item != begin ) {
 		    item = item->prev;
 		    while (item && (item->isVisible() == FALSE)) {
 			item = item->prev;
@@ -6041,7 +6041,7 @@
 	    TQIconViewItem *item = begin;
 	    for (;;) {
 		y += d->spacing + item->height();
-		if ( y > visibleHeight() && item != begin ) {
+		if ( y > visibleHeightSB() && item != begin ) {
 		    item = item->prev;
 		    while (item && (item->isVisible() == FALSE)) {
 			item = item->prev;
@@ -6605,4 +6605,24 @@
 #endif
 }
 
+int TQIconView::visibleWidthSB() const
+{
+    if ( vScrollBarMode() != Auto )
+        return visibleWidth();
+
+    int offset = verticalScrollBar()->isVisible() ? 0
+        : style().pixelMetric( TQStyle::PM_ScrollBarExtent, verticalScrollBar() );
+    return TQMAX( 0, visibleWidth() - offset );
+}
+
+int TQIconView::visibleHeightSB() const
+{
+    if ( hScrollBarMode() != Auto )
+        return visibleHeight();
+
+    int offset = horizontalScrollBar()->isVisible() ? 0
+        : style().pixelMetric( TQStyle::PM_ScrollBarExtent, horizontalScrollBar() );
+    return TQMAX( 0, visibleHeight() - offset );
+}
+
 #endif // QT_NO_ICONVIEW

Fix zoom in TQTextEdit

TQTextEdit::zoomIn / TQTextEdit::zoomOut does not work if the original
font had its size specified in pixels instead of points.
pointSize() returns 0 in such case.

diff --git a/src/widgets/qtextedit.cpp b/src/widgets/qtextedit.cpp
index 9507d4f..67703f3 100644
--- a/src/widgets/qtextedit.cpp
 ** Diff limit reached (max: 250 lines) **

Enhance warning verbosity in TQFile (unix)

 ** Diff limit reached (max: 250 lines) **

Fix crash in TQTranslator

 ** Diff limit reached (max: 250 lines) **

Fix dpi detection when using xft2

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Fix unwanted toggling TQIconViewItem focus on click

This fixes the 'flashing' icon when clicking repeatedly on a TQIconView or
derivates (ie TDEIconView, KonqIconViewWidget, the KDesktop and so on..).
The current behavior considers that if not over an icon, the user is
clicking down to perform icons selection (with the rubberband).
This is not always true, since a click might be used to give focus to a
window or unselect some icons.

How this is fixed: when clicking down the mouse a flag is set. If the pointer
is moved on the iconview with the button held down, then (and only at that
moment) the rubber is created. Now a selection operation (the one done with
the rubber) begins when moving the mouse and not only when clicking on the
empty space.

 ** Diff limit reached (max: 250 lines) **