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Fix empty textarea reflow. Fix empty line (just \n) redraw. Add set layout function to set size and padding.

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This commit is contained in:
Michael Drake 2013-02-06 22:30:32 +00:00
parent 2260152ebf
commit 008cdb42d7
2 changed files with 51 additions and 4 deletions
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39
desktop/textarea.c
View File

@ -498,6 +498,13 @@ static bool textarea_reflow(struct textarea *ta, unsigned int start)
avail_width = 0;
h_extent = avail_width;
if (ta->text.len == 1) {
/* Handle empty textarea */
assert(ta->text.data[0] == '\0');
ta->lines[line].b_start = 0;
ta->lines[line++].b_length = 1;
}
restart = false;
for (len = ta->text.len - 1, text = ta->text.data; len > 0;
len -= b_off, text += b_off) {
@ -658,7 +665,6 @@ static bool textarea_reflow(struct textarea *ta, unsigned int start)
* \param ta Text area
* \param x X coordinate
* \param y Y coordinate
* \param b_off Updated to byte offset
* \param c_off Updated to character offset
*/
static void textarea_get_xy_offset(struct textarea *ta, int x, int y,
@ -1033,7 +1039,7 @@ struct textarea *textarea_create(const textarea_flags flags,
ret->show = &ret->text;
}
ret->line_height = FIXTOINT(FDIV((FMUL(FLTTOFIX(1.2),
ret->line_height = FIXTOINT(FDIV((FMUL(FLTTOFIX(1.3),
FMUL(nscss_screen_dpi,
INTTOFIX((setup->text.size /
FONT_SIZE_SCALE))))), F_72));
@ -1365,8 +1371,10 @@ void textarea_redraw(struct textarea *ta, int x, int y, colour bg,
for (line = line0; (line <= line1) &&
(y + line * ta->line_height <= r.y1 + ta->scroll_y);
line++) {
if (ta->lines[line].b_length == 0)
if (ta->lines[line].b_length == 0) {
c_pos++;
continue;
}
/* reset clip rectangle */
plot->clip(&r);
@ -2054,3 +2062,28 @@ void textarea_set_dimensions(struct textarea *ta, int width, int height)
ta->callback(ta->data, &msg);
}
/* exported interface, documented in textarea.h */
void textarea_set_layout(struct textarea *ta, int width, int height,
int top, int right, int bottom, int left)
{
struct textarea_msg msg;
ta->vis_width = width;
ta->vis_height = height;
ta->pad_top = top;
ta->pad_right = right;
ta->pad_bottom = bottom;
ta->pad_left = left;
textarea_reflow(ta, 0);
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;
ta->callback(ta->data, &msg);
}

16
desktop/textarea.h
View File

@ -128,7 +128,7 @@ bool textarea_set_text(struct textarea *ta, const char *text);
*
* \param ta Text area
* \param buf Pointer to buffer to receive data, or NULL
* to read length required
* to read length required (includes trailing '\0')
* \param len Length (bytes) of buffer pointed to by buf, or 0 to read length
* \return Length (bytes) written/required or -1 on error
*/
@ -202,5 +202,19 @@ void textarea_get_dimensions(struct textarea *ta, int *width, int *height);
* \param height the new height of the textarea
*/
void textarea_set_dimensions(struct textarea *ta, int width, int height);
/**
* Set the dimensions and padding of a textarea, causing a reflow and
* emitting a redraw request.
*
* \param width the new width of the textarea
* \param height the new height of the textarea
* \param top the new top padding of the textarea
* \param right the new right padding of the textarea
* \param bottom the new bottom padding of the textarea
* \param left the new left padding of the textarea
*/
void textarea_set_layout(struct textarea *ta, int width, int height,
int top, int right, int bottom, int left);
#endif