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Scroll widget - support scroll bar actions: move by page / by line

This commit is contained in:
Vadim Lopatin 2014-11-28 14:58:24 +03:00
parent 7f0c4250d0
commit b1e133c21b
1 changed files with 16 additions and 8 deletions
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24
src/dlangui/widgets/scroll.d
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@ -257,6 +257,14 @@ class ScrollWidget : ScrollWidgetBase {
} }
protected void scrollTo(int x, int y) { protected void scrollTo(int x, int y) {
if (x > _fullScrollableArea.right - _visibleScrollableArea.width)
x = _fullScrollableArea.right - _visibleScrollableArea.width;
if (y > _fullScrollableArea.bottom - _visibleScrollableArea.height)
y = _fullScrollableArea.bottom - _visibleScrollableArea.height;
if (x < 0)
x = 0;
if (y < 0)
y = 0;
_visibleScrollableArea.left = x; _visibleScrollableArea.left = x;
_visibleScrollableArea.top = y; _visibleScrollableArea.top = y;
updateScrollBars(); updateScrollBars();
@ -268,13 +276,13 @@ class ScrollWidget : ScrollWidgetBase {
if (event.action == ScrollAction.SliderMoved || event.action == ScrollAction.SliderReleased) { if (event.action == ScrollAction.SliderMoved || event.action == ScrollAction.SliderReleased) {
scrollTo(event.position, scrollPos.y); scrollTo(event.position, scrollPos.y);
} else if (event.action == ScrollAction.PageUp) { } else if (event.action == ScrollAction.PageUp) {
//handleAction(new Action(GridActions.ScrollPageLeft)); scrollTo(scrollPos.x - _clientRect.width * 3 / 4, scrollPos.y);
} else if (event.action == ScrollAction.PageDown) { } else if (event.action == ScrollAction.PageDown) {
//handleAction(new Action(GridActions.ScrollPageRight)); scrollTo(scrollPos.x + _clientRect.width * 3 / 4, scrollPos.y);
} else if (event.action == ScrollAction.LineUp) { } else if (event.action == ScrollAction.LineUp) {
//handleAction(new Action(GridActions.ScrollLeft)); scrollTo(scrollPos.x - _clientRect.width / 20, scrollPos.y);
} else if (event.action == ScrollAction.LineDown) { } else if (event.action == ScrollAction.LineDown) {
//handleAction(new Action(GridActions.ScrollRight)); scrollTo(scrollPos.x + _clientRect.width / 20, scrollPos.y);
} }
return true; return true;
} }
@ -284,13 +292,13 @@ class ScrollWidget : ScrollWidgetBase {
if (event.action == ScrollAction.SliderMoved || event.action == ScrollAction.SliderReleased) { if (event.action == ScrollAction.SliderMoved || event.action == ScrollAction.SliderReleased) {
scrollTo(scrollPos.x, event.position); scrollTo(scrollPos.x, event.position);
} else if (event.action == ScrollAction.PageUp) { } else if (event.action == ScrollAction.PageUp) {
//handleAction(new Action(GridActions.ScrollPageUp)); scrollTo(scrollPos.x, scrollPos.y - _clientRect.height * 3 / 4);
} else if (event.action == ScrollAction.PageDown) { } else if (event.action == ScrollAction.PageDown) {
//handleAction(new Action(GridActions.ScrollPageDown)); scrollTo(scrollPos.x, scrollPos.y + _clientRect.height * 3 / 4);
} else if (event.action == ScrollAction.LineUp) { } else if (event.action == ScrollAction.LineUp) {
//handleAction(new Action(GridActions.ScrollUp)); scrollTo(scrollPos.x, scrollPos.y - _clientRect.height / 20);
} else if (event.action == ScrollAction.LineDown) { } else if (event.action == ScrollAction.LineDown) {
//handleAction(new Action(GridActions.ScrollDown)); scrollTo(scrollPos.x, scrollPos.y + _clientRect.height / 20);
} }
return true; return true;
} }