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Add scrollwheel support to textareas.

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This commit is contained in:
Michael Drake 2013-02-08 15:26:24 +00:00
parent f57e89cc25
commit 698f391289
3 changed files with 36 additions and 0 deletions
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16
desktop/textarea.c
View File

@ -2078,3 +2078,19 @@ void textarea_set_layout(struct textarea *ta, int width, int height,
ta->pad_left = left;
textarea_reflow(ta, 0);
}
/* exported interface, documented in textarea.h */
bool textarea_scroll(struct textarea *ta, int scrx, int scry)
{
bool handled_scroll = false;
if (ta->bar_x != NULL && scrx != 0 &&
scrollbar_scroll(ta->bar_x, scrx))
handled_scroll = true;
if (ta->bar_y != NULL && scry != 0 &&
scrollbar_scroll(ta->bar_y, scry))
handled_scroll = true;
return handled_scroll;
}

11
desktop/textarea.h
View File

@ -219,5 +219,16 @@ void textarea_set_dimensions(struct textarea *ta, int width, int height);
*/
void textarea_set_layout(struct textarea *ta, int width, int height,
int top, int right, int bottom, int left);
/**
* Scroll a textarea by an amount. Only does anything if multi-line textarea
* has scrollbars. If it scrolls, it will emit a redraw request.
*
* \param ta textarea widget
* \param scrx number of px try to scroll in x direction
* \param scry number of px try to scroll in y direction
* \return true iff the textarea was scrolled
*/
bool textarea_scroll(struct textarea *ta, int scrx, int scry);
#endif

9
render/html.c
View File

@ -35,6 +35,7 @@
#include "desktop/options.h"
#include "desktop/selection.h"
#include "desktop/scrollbar.h"
#include "desktop/textarea.h"
#include "image/bitmap.h"
#include "render/box.h"
#include "render/font.h"
@ -2681,6 +2682,14 @@ html_scroll_at_point(struct content *c, int x, int y, int scrx, int scry)
x - box_x, y - box_y, scrx, scry) == true)
return true;
/* Pass into textarea widget */
if (box->gadget && (box->gadget->type == GADGET_TEXTAREA ||
box->gadget->type == GADGET_PASSWORD ||
box->gadget->type == GADGET_TEXTBOX) &&
textarea_scroll(box->gadget->data.text.ta,
scrx, scry) == true)
return true;
/* Pass into object */
if (box->object != NULL && content_scroll_at_point(
box->object, x - box_x, y - box_y,