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Scaled textarea rendering support. Ugly.

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This commit is contained in:
Michael Drake 2013-02-08 23:25:40 +00:00
parent 586e02e915
commit 0d831c4ab6
4 changed files with 77 additions and 36 deletions
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104
desktop/textarea.c
View File

@ -1355,7 +1355,7 @@ int textarea_get_caret(struct textarea *ta)
/* exported interface, documented in textarea.h */
void textarea_redraw(struct textarea *ta, int x, int y, colour bg,
void textarea_redraw(struct textarea *ta, int x, int y, colour bg, float scale,
const struct rect *clip, const struct redraw_context *ctx)
{
const struct plotter_table *plot = ctx->plot;
@ -1366,7 +1366,9 @@ void textarea_redraw(struct textarea *ta, int x, int y, colour bg,
char *line_text;
struct rect r, s;
bool selected = false;
plot_font_style_t *fstyle;
plot_font_style_t fstyle;
int fsize = ta->fstyle.size;
int line_height = ta->line_height;
plot_style_t plot_style_fill_bg = {
.stroke_type = PLOT_OP_TYPE_NONE,
.stroke_width = 0,
@ -1404,10 +1406,17 @@ void textarea_redraw(struct textarea *ta, int x, int y, colour bg,
r.x0 = x;
if (r.y0 < y)
r.y0 = y;
if (r.x1 > x + ta->vis_width)
r.x1 = x + ta->vis_width;
if (r.y1 > y + ta->vis_height)
r.y1 = y + ta->vis_height;
if (scale == 1.0) {
if (r.x1 > x + ta->vis_width)
r.x1 = x + ta->vis_width;
if (r.y1 > y + ta->vis_height)
r.y1 = y + ta->vis_height;
} else {
if (r.x1 > x + ta->vis_width * scale)
r.x1 = x + ta->vis_width * scale;
if (r.y1 > y + ta->vis_height * scale)
r.y1 = y + ta->vis_height * scale;
}
plot->clip(&r);
if (ta->border_col != NS_TRANSPARENT &&
@ -1425,16 +1434,32 @@ void textarea_redraw(struct textarea *ta, int x, int y, colour bg,
&plot_style_fill_bg);
}
if (r.x0 < x + ta->border_width)
r.x0 = x + ta->border_width;
if (r.x1 > x + ta->vis_width - ta->border_width)
r.x1 = x + ta->vis_width - ta->border_width;
if (r.y0 < y + ta->border_width)
r.y0 = y + ta->border_width;
if (r.y1 > y + ta->vis_height - ta->border_width -
(ta->bar_x != NULL ? SCROLLBAR_WIDTH : 0))
r.y1 = y + ta->vis_height - ta->border_width -
(ta->bar_x != NULL ? SCROLLBAR_WIDTH : 0);
if (scale == 1.0) {
if (r.x0 < x + ta->border_width)
r.x0 = x + ta->border_width;
if (r.x1 > x + ta->vis_width - ta->border_width)
r.x1 = x + ta->vis_width - ta->border_width;
if (r.y0 < y + ta->border_width)
r.y0 = y + ta->border_width;
if (r.y1 > y + ta->vis_height - ta->border_width -
(ta->bar_x != NULL ? SCROLLBAR_WIDTH : 0))
r.y1 = y + ta->vis_height - ta->border_width -
(ta->bar_x != NULL ? SCROLLBAR_WIDTH :
0);
} else {
if (r.x0 < x + ta->border_width * scale)
r.x0 = x + ta->border_width * scale;
if (r.x1 > x + (ta->vis_width - ta->border_width) * scale)
r.x1 = x + (ta->vis_width - ta->border_width) * scale;
if (r.y0 < y + ta->border_width * scale)
r.y0 = y + ta->border_width * scale;
if (r.y1 > y + (ta->vis_height - ta->border_width -
(ta->bar_x != NULL ? SCROLLBAR_WIDTH : 0)) *
scale)
r.y1 = y + (ta->vis_height - ta->border_width -
(ta->bar_x != NULL ? SCROLLBAR_WIDTH :
0) * scale);
}
if (line0 > 0)
c_pos = utf8_bounded_length(ta->show->data,
@ -1455,6 +1480,14 @@ void textarea_redraw(struct textarea *ta, int x, int y, colour bg,
text_y_offset_baseline += (vis_height * 3 + 2) / 4;
}
if (scale != 1.0) {
text_y_offset *= scale;
text_y_offset_baseline *= scale;
fsize *= scale;
line_height *= scale;
}
plot_style_fill_bg.fill_colour = ta->sel_fstyle.background;
for (line = line0; (line <= line1) &&
@ -1485,30 +1518,31 @@ void textarea_redraw(struct textarea *ta, int x, int y, colour bg,
/* rest of line unselected */
selected = false;
c_len_part = c_len;
fstyle = &ta->fstyle;
fstyle = ta->fstyle;
} else if (sel_start <= c_pos &&
sel_end > c_pos + c_len) {
/* rest of line selected */
selected = true;
c_len_part = c_len;
fstyle = &ta->sel_fstyle;
fstyle = ta->sel_fstyle;
} else if (sel_start > c_pos) {
/* next part of line unselected */
selected = false;
c_len_part = sel_start - c_pos;
fstyle = &ta->fstyle;
fstyle = ta->fstyle;
} else if (sel_end > c_pos) {
/* next part of line selected */
selected = true;
c_len_part = sel_end - c_pos;
fstyle = &ta->sel_fstyle;
fstyle = ta->sel_fstyle;
} else {
assert(0);
}
fstyle.size = fsize;
line_text = &(ta->show->data[ta->lines[line].b_start]);
line_len = ta->lines[line].b_length;
@ -1522,7 +1556,7 @@ void textarea_redraw(struct textarea *ta, int x, int y, colour bg,
/* find clip left/right for this part of line */
left = right;
nsfont.font_width(&ta->fstyle, line_text,
nsfont.font_width(&fstyle, line_text,
b_end, &right);
right += x + ta->border_width + ta->pad_left -
ta->scroll_x;
@ -1533,14 +1567,20 @@ void textarea_redraw(struct textarea *ta, int x, int y, colour bg,
s.x0 = left;
if (s.x1 > right)
s.x1 = right;
plot->clip(&s);
line_y = y + line * ta->line_height - ta->scroll_y;
line_y = line * ta->line_height - ta->scroll_y;
if (scale != 1.0) {
line_y *= scale;
}
if (selected) {
/* draw selection fill */
plot->rectangle(s.x0, line_y + text_y_offset,
s.x1, line_y + ta->line_height +
plot->rectangle(s.x0, y + line_y +
text_y_offset,
s.x1, y + line_y + line_height +
text_y_offset,
&plot_style_fill_bg);
}
@ -1548,10 +1588,10 @@ void textarea_redraw(struct textarea *ta, int x, int y, colour bg,
/* draw text */
plot->text(x + ta->border_width + ta->pad_left -
ta->scroll_x,
line_y + text_y_offset_baseline,
y + line_y + text_y_offset_baseline,
ta->show->data +
ta->lines[line].b_start,
ta->lines[line].b_length, fstyle);
ta->lines[line].b_length, &fstyle);
c_pos += c_len_part;
c_len -= c_len_part;
@ -1584,17 +1624,17 @@ void textarea_redraw(struct textarea *ta, int x, int y, colour bg,
if (ta->bar_x != NULL)
scrollbar_redraw(ta->bar_x,
x + ta->border_width,
y + ta->vis_height - ta->border_width -
x / scale + ta->border_width,
y / scale + ta->vis_height - ta->border_width -
SCROLLBAR_WIDTH,
clip, 1.0, ctx);
clip, scale, ctx);
if (ta->bar_y != NULL)
scrollbar_redraw(ta->bar_y,
x + ta->vis_width - ta->border_width -
x / scale + ta->vis_width - ta->border_width -
SCROLLBAR_WIDTH,
y + ta->border_width,
clip, 1.0, ctx);
y / scale + ta->border_width,
clip, scale, ctx);
}

3
desktop/textarea.h
View File

@ -169,10 +169,11 @@ int textarea_get_caret(struct textarea *ta);
* \param x x coordinate of textarea top
* \param y y coordinate of textarea left
* \param bg background colour under textarea
* \param scale scale to render at
* \param clip clip rectangle
* \param ctx current redraw context
*/
void textarea_redraw(struct textarea *ta, int x, int y, colour bg,
void textarea_redraw(struct textarea *ta, int x, int y, colour bg, float scale,
const struct rect *clip, const struct redraw_context *ctx);
/**

2
desktop/tree.c
View File

@ -2079,7 +2079,7 @@ void tree_draw(struct tree *tree, int x, int y,
textarea_redraw(tree->textarea, x, y,
plot_style_fill_tree_background.
fill_colour,
&clip, &new_ctx);
1.0, &clip, &new_ctx);
}
}

4
render/html_redraw.c
View File

@ -2411,8 +2411,8 @@ bool html_redraw_box(const html_content *html, struct box *box,
(box->gadget->type == GADGET_TEXTAREA ||
box->gadget->type == GADGET_PASSWORD ||
box->gadget->type == GADGET_TEXTBOX)) {
textarea_redraw(box->gadget->data.text.ta,
x, y, current_background_color, &r, ctx);
textarea_redraw(box->gadget->data.text.ta, x, y,
current_background_color, scale, &r, ctx);
} else if (box->text) {
if (!html_redraw_text_box(html, box, x, y, &r, scale,