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initial redesign of canvas scrolling to facilitate independent x- and y-axis scrolling of specific groups within the canvas.

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This commit should cause no change in behaviour, but contains all the code and changes necessary
for the next step
This commit is contained in:
Paul Davis 2014-05-18 12:22:23 -04:00
parent ee6c483d18
commit 97109672c7
11 changed files with 144 additions and 38 deletions
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6
libs/canvas/canvas/canvas.h
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@ -108,6 +108,8 @@ public:
}
void scroll_to (Coord x, Coord y);
void set_global_scroll (bool);
virtual Rect visible_area () const = 0;
void zoomed();
@ -122,8 +124,8 @@ protected:
/** our root group */
RootGroup _root;
Coord _scroll_offset_x;
Coord _scroll_offset_y;
Duple _scroll_offset;
bool _global_scroll;
virtual void pick_current_item (int state) = 0;
virtual void pick_current_item (Duple const &, int state) = 0;