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Fixed the position of the drag image when dragging listboxes. Minor fix for mac graphics contexts, and win32 webcam latency adjustment.

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This commit is contained in:
Julian Storer 2009-12-24 12:30:25 +00:00
parent 9000fc6604
commit df5f73910b
7 changed files with 149 additions and 92 deletions
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80
src/gui/components/controls/juce_ListBox.cpp
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@ -137,23 +137,7 @@ public:
if (dragDescription.isNotEmpty())
{
isDragging = true;
DragAndDropContainer* const dragContainer
= DragAndDropContainer::findParentDragContainerFor (this);
if (dragContainer != 0)
{
Image* dragImage = owner.createSnapshotOfSelectedRows();
dragImage->multiplyAllAlphas (0.6f);
dragContainer->startDragging (dragDescription, &owner, dragImage, true);
}
else
{
// to be able to do a drag-and-drop operation, the listbox needs to
// be inside a component which is also a DragAndDropContainer.
jassertfalse
}
owner.startDragAndDrop (e, dragDescription);
}
}
}
@ -904,36 +888,76 @@ void ListBox::repaintRow (const int rowNumber) throw()
repaint (r.getX(), r.getY(), r.getWidth(), r.getHeight());
}
Image* ListBox::createSnapshotOfSelectedRows()
Image* ListBox::createSnapshotOfSelectedRows (int& imageX, int& imageY)
{
Image* snapshot = Image::createNativeImage (Image::ARGB, getWidth(), getHeight(), true);
Graphics g (*snapshot);
Rectangle imageArea;
const int firstRow = getRowContainingPosition (0, 0);
for (int i = getNumRowsOnScreen() + 2; --i >= 0;)
int i;
for (i = getNumRowsOnScreen() + 2; --i >= 0;)
{
Component* rowComp = viewport->getComponentForRowIfOnscreen (firstRow + i);
if (rowComp != 0 && isRowSelected (firstRow + i))
{
g.saveState();
int x = 0, y = 0;
rowComp->relativePositionToOtherComponent (this, x, y);
g.setOrigin (x, y);
g.reduceClipRegion (0, 0, rowComp->getWidth(), rowComp->getHeight());
const Rectangle rowRect (x, y, rowComp->getWidth(), rowComp->getHeight());
rowComp->paintEntireComponent (g);
if (imageArea.isEmpty())
imageArea = rowRect;
else
imageArea = imageArea.getUnion (rowRect);
}
}
g.restoreState();
imageArea = imageArea.getIntersection (Rectangle (0, 0, getWidth(), getHeight()));
imageX = imageArea.getX();
imageY = imageArea.getY();
Image* snapshot = Image::createNativeImage (Image::ARGB, imageArea.getWidth(), imageArea.getHeight(), true);
for (i = getNumRowsOnScreen() + 2; --i >= 0;)
{
Component* rowComp = viewport->getComponentForRowIfOnscreen (firstRow + i);
if (rowComp != 0 && isRowSelected (firstRow + i))
{
int x = 0, y = 0;
rowComp->relativePositionToOtherComponent (this, x, y);
Graphics g (*snapshot);
g.setOrigin (x - imageX, y - imageY);
if (g.reduceClipRegion (0, 0, rowComp->getWidth(), rowComp->getHeight()))
rowComp->paintEntireComponent (g);
}
}
return snapshot;
}
void ListBox::startDragAndDrop (const MouseEvent& e, const String& dragDescription)
{
DragAndDropContainer* const dragContainer
= DragAndDropContainer::findParentDragContainerFor (this);
if (dragContainer != 0)
{
int x, y;
Image* dragImage = createSnapshotOfSelectedRows (x, y);
dragImage->multiplyAllAlphas (0.6f);
MouseEvent e2 (e.getEventRelativeTo (this));
const Point p ((float) (x - e2.x), (float) (y - e2.y));
dragContainer->startDragging (dragDescription, this, dragImage, true, &p);
}
else
{
// to be able to do a drag-and-drop operation, the listbox needs to
// be inside a component which is also a DragAndDropContainer.
jassertfalse
}
}
//==============================================================================
Component* ListBoxModel::refreshComponentForRow (int, bool, Component* existingComponentToUpdate)