84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
// 30 november 2014
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static void finishSelect(struct table *t, intptr_t prev)
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{
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if (t->selected < 0)
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t->selected = 0;
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if (t->selected >= t->count)
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t->selected = t->count - 1;
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// always redraw the old and new rows to avoid artifacts when scrolling, even if they are the same (since the focused column may have changed)
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redrawRow(t, prev);
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if (prev != t->selected)
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redrawRow(t, t->selected);
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// if we need to scroll, the scrolling will force a redraw, so we don't have to worry about doing so ourselves
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if (t->selected < t->firstVisible)
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vscrollto(t, t->selected);
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// note that this is not lastVisible(t) because the last visible row may only be partially visible and we want selections to make them fully visible
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else if (t->selected >= (t->firstVisible + t->pagesize))
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vscrollto(t, t->selected - t->pagesize + 1);
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}
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// TODO isolate functionality so other keyboard event handlers can run
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static void keySelect(struct table *t, WPARAM wParam, LPARAM lParam)
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{
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intptr_t prev;
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// TODO figure out correct behavior with nothing selected
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if (t->count == 0) // don't try to do anything if there's nothing to do
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return;
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prev = t->selected;
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switch (wParam) {
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case VK_UP:
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t->selected--;
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break;
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case VK_DOWN:
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t->selected++;
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break;
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case VK_PRIOR:
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t->selected -= t->pagesize;
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break;
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case VK_NEXT:
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t->selected += t->pagesize;
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break;
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case VK_HOME:
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t->selected = 0;
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break;
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case VK_END:
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t->selected = t->count - 1;
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break;
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case VK_LEFT:
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t->focusedColumn--;
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if (t->focusedColumn < 0)
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if (t->nColumns == 0) // peg at -1
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t->focusedColumn = -1;
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else
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t->focusedColumn = 0;
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break;
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case VK_RIGHT:
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t->focusedColumn++;
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if (t->focusedColumn >= t->nColumns)
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if (t->nColumns == 0) // peg at -1
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t->focusedColumn = -1;
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else
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t->focusedColumn = t->nColumns - 1;
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break;
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// TODO keyboard shortcuts for going to the first/last column?
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default:
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// don't touch anything
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return;
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}
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finishSelect(t, prev);
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}
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// TODO rename
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static void selectItem(struct table *t, WPARAM wParam, LPARAM lParam)
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{
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intptr_t prev;
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prev = t->selected;
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lParamToRowColumn(t, lParam, &(t->selected), &(t->focusedColumn));
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finishSelect(t, prev);
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}
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