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document mouse interaction a bit

This commit is contained in:
Vincent Sanders 2012-12-03 18:47:22 +00:00
parent 47579b468c
commit c1c3a06748
1 changed files with 49 additions and 13 deletions
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62
render/html_interaction.c
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@ -400,12 +400,44 @@ void html_mouse_action(struct content *c, struct browser_window *bw,
box_x = box->margin[LEFT];
box_y = box->margin[TOP];
/* descend through visible boxes setting more specific values for:
* box - deepest box at point
* html_object_box - html object
* html_object_pos_x - html object
* html_object_pos_y - html object
* object - non html object
* iframe - iframe
* url - href or imagemap
* target - href or imagemap or gadget
* url_box - href or imagemap
* imagemap - imagemap
* gadget - gadget
* gadget_box - gadget
* gadget_box_x - gadget
* gadget_box_y - gadget
* title - title
* pointer
*
* drag_candidate - first box with scroll
* padding_left - box with scroll
* padding_right
* padding_top
* padding_bottom
* scrollbar - inside padding box stops decent
* scroll_mouse_x - inside padding box stops decent
* scroll_mouse_y - inside padding box stops decent
*
* text_box - text box
* text_box_x - text_box
*/
while ((next_box = box_at_point(box, x, y, &box_x, &box_y)) != NULL) {
box = next_box;
if (box->style && css_computed_visibility(box->style) ==
CSS_VISIBILITY_HIDDEN)
if ((box->style != NULL) &&
(css_computed_visibility(box->style) ==
CSS_VISIBILITY_HIDDEN)) {
continue;
}
if (box->node != NULL) {
node = box->node;
@ -421,8 +453,9 @@ void html_mouse_action(struct content *c, struct browser_window *bw,
}
}
if (box->iframe)
if (box->iframe) {
iframe = box->iframe;
}
if (box->href) {
url = box->href;
@ -448,12 +481,14 @@ void html_mouse_action(struct content *c, struct browser_window *bw,
target = gadget->form->target;
}
if (box->title)
if (box->title) {
title = box->title;
}
pointer = get_pointer_shape(box, false);
if (box->scroll_y != NULL || box->scroll_x != NULL) {
if ((box->scroll_x != NULL) ||
(box->scroll_y != NULL)) {
if (drag_candidate == NULL) {
drag_candidate = box;
@ -468,12 +503,14 @@ void html_mouse_action(struct content *c, struct browser_window *bw,
padding_bottom = padding_top + box->padding[TOP] +
box->height + box->padding[BOTTOM];
if (x > padding_left && x < padding_right &&
y > padding_top && y < padding_bottom) {
if ((x > padding_left) &&
(x < padding_right) &&
(y > padding_top) &&
(y < padding_bottom)) {
/* mouse inside padding box */
if (box->scroll_y != NULL && x > padding_right -
SCROLLBAR_WIDTH) {
if ((box->scroll_y != NULL) &&
(x > (padding_right - SCROLLBAR_WIDTH))) {
/* mouse above vertical box scroll */
scrollbar = box->scroll_y;
@ -482,9 +519,8 @@ void html_mouse_action(struct content *c, struct browser_window *bw,
scroll_mouse_y = y - padding_top;
break;
} else if (box->scroll_x != NULL &&
y > padding_bottom -
SCROLLBAR_WIDTH) {
} else if ((box->scroll_x != NULL) &&
(y > (padding_bottom - SCROLLBAR_WIDTH))) {
/* mouse above horizontal box scroll */
scrollbar = box->scroll_x;