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authorTim E. Real <termtech@rogers.com>2010-11-22 21:01:30 +0000
committerTim E. Real <termtech@rogers.com>2010-11-22 21:01:30 +0000
commit8139e4fbcc1ecd55ad7eaf643b5c477a19688b64 (patch)
treeabcb2d15898d1c52c057516c21dc9fda78f45c5a /muse2/muse
parentc8b54c0ecd080eae628520bc670cbb40a472da21 (diff)
Eliminated double-buffering pixmap in View class (not required in Qt4).
Diffstat (limited to 'muse2/muse')
-rw-r--r--muse2/muse/widgets/view.cpp106
-rw-r--r--muse2/muse/widgets/view.h2
2 files changed, 21 insertions, 87 deletions
diff --git a/muse2/muse/widgets/view.cpp b/muse2/muse/widgets/view.cpp
index 79923dac..ffa1edca 100644
--- a/muse2/muse/widgets/view.cpp
+++ b/muse2/muse/widgets/view.cpp
@@ -35,7 +35,6 @@ View::View(QWidget* w, int xm, int ym, const char* name)
setBackgroundRole(QPalette::NoRole);
brush.setStyle(Qt::SolidPattern);
brush.setColor(Qt::lightGray);
- pmValid = false;
}
//---------------------------------------------------------
@@ -78,40 +77,13 @@ void View::setXPos(int x)
{
int delta = xpos - x; // - -> shift left
xpos = x;
- if (pm.isNull())
- return;
- if (!pmValid) {
- //printf("View::setXPos !pmValid x:%d width:%d delta:%d\n", x, width(), delta);
- redraw();
- return;
- }
+
int w = width();
int h = height();
- QRect r;
- if (delta >= w || delta <= -w)
- r = QRect(0, 0, w, h);
- else if (delta < 0) { // shift left
- QPainter p(&pm);
- p.drawPixmap(0, 0, pm, -delta, 0, w + delta, h);
- r = QRect(w + delta, 0, -delta, h);
- }
- else { // shift right
- QPainter p(&pm);
- p.drawPixmap(delta, 0, pm, 0, 0, w-delta, h);
- r = QRect(0, 0, delta, h);
- }
- QRect olr = overlayRect();
- QRect olr1(olr);
- olr1.translate(delta, 0);
-
- r |= olr;
- r |= olr1;
-
- //printf("View::setXPos x:%d w:%d delta:%d r.x:%d r.w:%d\n", x, w, delta, r.x(), r.width());
+ scroll(delta, 0);
- paint(r);
- update();
+ //update();
}
//---------------------------------------------------------
@@ -122,37 +94,13 @@ void View::setYPos(int y)
{
int delta = ypos - y; // - -> shift up
ypos = y;
- if (pm.isNull())
- return;
- if (!pmValid) {
- //printf("View::setYPos !pmValid y:%d height:%d delta:%d\n", y, height(), delta);
-
- redraw();
- return;
- }
+
int w = width();
int h = height();
- QRect r;
- if (delta >= h || delta <= -h)
- r = QRect(0, 0, w, h);
- else if (delta < 0) { // shift up
- QPainter p(&pm);
- p.drawPixmap(0, 0, pm, 0, -delta, w, h + delta);
- r = QRect(0, h + delta, w, -delta);
- }
- else { // shift down
- QPainter p(&pm);
- p.drawPixmap(0, delta, pm, 0, 0, w, h-delta);
- r = QRect(0, 0, w, delta);
- }
- QRect olr = overlayRect();
- QRect olr1(olr);
- olr1.translate(0, delta);
+
+ scroll(0, delta);
- r |= olr;
- r |= olr1;
- paint(r);
- update();
+ //update();
}
//---------------------------------------------------------
@@ -161,15 +109,7 @@ void View::setYPos(int y)
void View::resizeEvent(QResizeEvent* ev)
{
- // The pixmap will be null at first. QPixmap::copy() won't give a valid pixmap if it's null.
- if(pm.isNull())
- // Create a valid pixmap.
- pm = QPixmap(ev->size().width(), ev->size().height());
- else
- // Copy the pixmap.
- pm = pm.copy(QRect(0, 0, ev->size().width(), ev->size().height()));
- pmValid = false;
}
//---------------------------------------------------------
@@ -178,11 +118,10 @@ void View::resizeEvent(QResizeEvent* ev)
void View::paintEvent(QPaintEvent* ev)
{
- //printf("View::paintEvent pmValid:%d x:%d width:%d y:%d height:%d\n", pmValid, ev->rect().x(), ev->rect().width(), ev->rect().y(), ev->rect().height());
- if (!pmValid)
- paint(ev->rect());
- QPainter p(this);
- p.drawPixmap(ev->rect().topLeft(), pm, ev->rect());
+ //printf("View::paintEvent x:%d width:%d y:%d height:%d\n",
+ // ev->rect().x(), ev->rect().width(), ev->rect().y(), ev->rect().height());
+
+ paint(ev->rect());
}
//---------------------------------------------------------
@@ -191,9 +130,8 @@ void View::paintEvent(QPaintEvent* ev)
void View::redraw()
{
- QRect r(0, 0, pm.width(), pm.height());
- //printf("View::redraw() r.x:%d r.w:%d\n", r.x(), r.width());
- paint(r);
+ //printf("View::redraw()\n"); // REMOVE Tim.
+
update();
}
@@ -203,8 +141,7 @@ void View::redraw()
void View::redraw(const QRect& r)
{
- //printf("View::redraw(QRect& r) r.x:%d r.w:%d\n", r.x(), r.width());
- paint(r);
+ //printf("View::redraw(QRect& r) r.x:%d r.w:%d\n", r.x(), r.width());
update(r);
}
@@ -215,14 +152,11 @@ void View::redraw(const QRect& r)
void View::paint(const QRect& r)
{
- if (pm.isNull())
- return;
QRect rr(r);
- if (!pmValid) {
- pmValid = true;
- rr = QRect(0, 0, pm.width(), pm.height());
- }
- QPainter p(&pm);
+
+ //printf("View::paint x:%d width:%d y:%d height:%d\n", r.x(), r.width(), r.y(), r.height());
+
+ QPainter p(this);
if (bgPixmap.isNull())
p.fillRect(rr, brush);
else
@@ -310,7 +244,7 @@ void View::dropEvent(QDropEvent* ev)
// "Sets the drop to happen at the given point. You do not normally need to use this
// as it will be set internally before your widget receives the drop event."
// But we need to remap it here...
- //ev->setPoint(mapDev(ev->pos())); TODO: Need to test this.
+ //ev->setPoint(mapDev(ev->pos()));
QDropEvent nev(mapDev(ev->pos()), ev->possibleActions(), ev->mimeData(), ev->mouseButtons(), ev->keyboardModifiers(), ev->type());
//viewDropEvent(ev);
viewDropEvent(&nev);
@@ -333,6 +267,8 @@ void View::setBg(const QPixmap& bgpm)
void View::pdraw(QPainter& p, const QRect& r)
{
+ //printf("View::pdraw x:%d width:%d y:%d height:%d\n", r.x(), r.width(), r.y(), r.height());
+
if (virt()) {
setPainter(p);
int x = r.x();
diff --git a/muse2/muse/widgets/view.h b/muse2/muse/widgets/view.h
index e7861607..5fb5507b 100644
--- a/muse2/muse/widgets/view.h
+++ b/muse2/muse/widgets/view.h
@@ -25,8 +25,6 @@
//---------------------------------------------------------
class View : public QWidget {
- QPixmap pm; // for double buffering
- bool pmValid;
QPixmap bgPixmap; // background Pixmap
QBrush brush;
bool _virt;