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[project @ 2004-11-21 19:45:17 by bursa]

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Fix possible divide by 0. Scroll objects correctly.

svn path=/import/netsurf/; revision=1366
This commit is contained in:
James Bursa 2004-11-21 19:45:17 +00:00
parent 8821cb6b2e
commit 58401792bd
1 changed files with 22 additions and 9 deletions
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31
render/html_redraw.c
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@ -264,7 +264,8 @@ bool html_redraw_box(struct box *box,
if (box->object) {
if (!content_redraw(box->object,
x + padding_left, y + padding_top,
x_scrolled + padding_left,
y_scrolled + padding_top,
width, height, x0, y0, x1, y1, scale,
current_background_color))
return false;
@ -925,13 +926,25 @@ void box_scrollbar_dimensions(const struct box * const box,
*vscroll = box_vscrollbar_present(box);
*hscroll = box_hscrollbar_present(box);
*well_height = padding_height - w - w;
*bar_top = (float) *well_height * (float) box->scroll_y /
(float) (box->descendant_y1 - box->descendant_y0);
*bar_height = (float) *well_height * (float) box->height /
(float) (box->descendant_y1 - box->descendant_y0);
*bar_top = 0;
*bar_height = *well_height;
if (box->descendant_y1 - box->descendant_y0 != 0) {
*bar_top = (float) *well_height * (float) box->scroll_y /
(float) (box->descendant_y1 -
box->descendant_y0);
*bar_height = (float) *well_height * (float) box->height /
(float) (box->descendant_y1 -
box->descendant_y0);
}
*well_width = padding_width - w - w - (*vscroll ? w : 0);
*bar_left = (float) *well_width * (float) box->scroll_x /
(float) (box->descendant_x1 - box->descendant_x0);
*bar_width = (float) *well_width * (float) box->width /
(float) (box->descendant_x1 - box->descendant_x0);
*bar_left = 0;
*bar_width = *well_width;
if (box->descendant_x1 - box->descendant_x0 != 0) {
*bar_left = (float) *well_width * (float) box->scroll_x /
(float) (box->descendant_x1 -
box->descendant_x0);
*bar_width = (float) *well_width * (float) box->width /
(float) (box->descendant_x1 -
box->descendant_x0);
}
}