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Word wrap support for frame node

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This commit is contained in:
Campbell Barton 2015-09-20 17:48:39 +10:00
parent c0d5523e6c
commit fa19af6a93
1 changed files with 21 additions and 11 deletions
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32
source/blender/editors/space_node/drawnode.c
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@ -391,6 +391,7 @@ static void node_draw_frame_label(bNodeTree *ntree, bNode *node, const float asp
float x, y;
const int font_size = data->label_size / aspect;
const float margin = (float)(NODE_DY / 4);
int label_height;
nodeLabel(ntree, node, label, sizeof(label));
@ -403,10 +404,11 @@ static void node_draw_frame_label(bNodeTree *ntree, bNode *node, const float asp
width = BLF_width(fontid, label, sizeof(label));
ascender = BLF_ascender(fontid);
label_height = ((margin / aspect) + (ascender * aspect));
/* 'x' doesn't need aspect correction */
x = BLI_rctf_cent_x(rct) - (0.5f * width);
y = rct->ymax - ((margin / aspect) + (ascender * aspect));
y = rct->ymax - label_height;
BLF_position(fontid, x, y, 0);
BLF_draw(fontid, label, BLF_DRAW_STR_DUMMY_MAX);
@ -415,31 +417,39 @@ static void node_draw_frame_label(bNodeTree *ntree, bNode *node, const float asp
if (node->id) {
Text *text = (Text *)node->id;
TextLine *line;
const float line_spacing = (BLF_height_max(fontid) * aspect) * 0.7f;
const int line_height_max = BLF_height_max(fontid);
const float line_spacing = (line_height_max * aspect);
const float line_width = (BLI_rctf_size_x(rct) - margin) / aspect;
int y_min;
/* 'x' doesn't need aspect correction */
x = rct->xmin + margin;
y = rct->ymax - ((margin / aspect) + (ascender * aspect));
y -= line_spacing;
y = rct->ymax - (label_height + line_spacing);
/* early exit */
y_min = y + ((margin * 2) - (y - rct->ymin));
BLF_enable(fontid, BLF_CLIPPING);
BLF_enable(fontid, BLF_CLIPPING | BLF_WORD_WRAP);
BLF_clipping(
fontid,
rct->xmin,
rct->ymin,
rct->xmin + ((rct->xmax - rct->xmin) / aspect) - margin,
/* round to avoid clipping half-way through a line */
y - (floorf(((y - rct->ymin) - (margin * 2)) / line_spacing) * line_spacing),
rct->xmin + line_width,
rct->ymax);
BLF_wordwrap(fontid, line_width);
for (line = text->lines.first; line; line = line->next) {
struct ResultBLF info;
BLF_position(fontid, x, y, 0);
BLF_draw(fontid, line->line, line->len);
y -= line_spacing;
if (y < rct->ymin) {
BLF_draw_ex(fontid, line->line, line->len, &info);
y -= line_spacing * info.lines;
if (y < y_min) {
break;
}
}
BLF_disable(fontid, BLF_CLIPPING);
BLF_disable(fontid, BLF_CLIPPING | BLF_WORD_WRAP);
}
BLF_disable(fontid, BLF_ASPECT);