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Avoid redraw of scrollbars when they've not changed.

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This commit is contained in:
Michael Drake 2013-03-20 17:53:38 +00:00
parent 71392160d0
commit 3403891f63
1 changed files with 22 additions and 16 deletions
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38
desktop/textarea.c
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@ -481,15 +481,17 @@ static bool textarea_select(struct textarea *ta, int b_start, int b_end,
msg.ta = ta;
msg.type = TEXTAREA_MSG_REDRAW_REQUEST;
msg.data.redraw.x0 = ta->border_width;
msg.data.redraw.x1 = ta->vis_width - ta->border_width -
((ta->bar_y == NULL) ? 0 : SCROLLBAR_WIDTH);
if (force_redraw || !pre_existing_selection ||
(ta->sel_start != b_start && ta->sel_end != b_end)) {
/* Asked to redraw everything, or there's a new selection, or
* both ends of the selection have moved */
msg.data.redraw.x0 = 0;
msg.data.redraw.y0 = 0;
msg.data.redraw.x1 = ta->vis_width;
msg.data.redraw.y1 = ta->vis_height;
msg.data.redraw.y0 = ta->border_width;
msg.data.redraw.y1 = ta->vis_height - ta->border_width -
((ta->bar_x == NULL) ? 0 : SCROLLBAR_WIDTH);
} else {
/* Redraw to cover change in selection start or change in
* selection end */
@ -523,11 +525,11 @@ static bool textarea_select(struct textarea *ta, int b_start, int b_end,
if (ta->lines[line_end + 1].b_start > b_high)
break;
msg.data.redraw.x0 = 0;
msg.data.redraw.y0 = max(0, ta->line_height * line_start +
msg.data.redraw.y0 = max(ta->border_width,
ta->line_height * line_start +
ta->text_y_offset - ta->scroll_y);
msg.data.redraw.x1 = ta->vis_width;
msg.data.redraw.y1 = min(ta->vis_height,
msg.data.redraw.y1 = min(ta->vis_height - ta->border_width -
((ta->bar_x == NULL) ? 0 : SCROLLBAR_WIDTH),
ta->line_height * line_end + ta->text_y_offset +
ta->line_height - ta->scroll_y);
}
@ -2365,10 +2367,12 @@ bool textarea_keypress(struct textarea *ta, uint32_t key)
if (redraw) {
msg.ta = ta;
msg.type = TEXTAREA_MSG_REDRAW_REQUEST;
msg.data.redraw.x0 = 0;
msg.data.redraw.y0 = 0;
msg.data.redraw.x1 = ta->vis_width;
msg.data.redraw.y1 = ta->vis_height;
msg.data.redraw.x0 = ta->border_width;
msg.data.redraw.y0 = ta->border_width;
msg.data.redraw.x1 = ta->vis_width - ta->border_width -
((ta->bar_y == NULL) ? 0 : SCROLLBAR_WIDTH);
msg.data.redraw.y1 = ta->vis_height - ta->border_width -
((ta->bar_x == NULL) ? 0 : SCROLLBAR_WIDTH);
ta->callback(ta->data, &msg);
}
@ -2587,10 +2591,12 @@ bool textarea_clear_selection(struct textarea *ta)
msg.ta = ta;
msg.type = TEXTAREA_MSG_REDRAW_REQUEST;
msg.data.redraw.x0 = 0;
msg.data.redraw.y0 = 0;
msg.data.redraw.x1 = ta->vis_width;
msg.data.redraw.y1 = ta->vis_height;
msg.data.redraw.x0 = ta->border_width;
msg.data.redraw.y0 = ta->border_width;
msg.data.redraw.x1 = ta->vis_width - ta->border_width -
((ta->bar_y == NULL) ? 0 : SCROLLBAR_WIDTH);
msg.data.redraw.y1 = ta->vis_height - ta->border_width -
((ta->bar_x == NULL) ? 0 : SCROLLBAR_WIDTH);
ta->callback(ta->data, &msg);