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eeshow/gfx/diff.c (diff_to_canvas): draw caller-supplied areas
These are for future highlighting. WIP.
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@ -47,12 +47,6 @@
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#define AREA_FILL 0xffd0f0
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struct area {
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int xa, ya, xb, yb;
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struct area *next;
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};
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struct diff {
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void *cr_ctx;
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uint32_t *new_img;
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@ -212,6 +206,7 @@ static void mark_area(struct diff *diff, int x, int y)
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area->xb = x + diff->frame_radius;
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area->ya = y - diff->frame_radius;
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area->yb = y + diff->frame_radius;
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area->color = AREA_FILL;
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area->next = diff->areas;
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diff->areas = area;
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@ -265,7 +260,7 @@ static void show_areas(struct diff *diff, uint32_t *a)
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for (area = diff->areas; area; area = area->next)
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complement_box(diff, a, area->xa, area->ya, area->xb, area->yb,
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AREA_FILL);
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area->color);
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}
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@ -317,7 +312,8 @@ static void merge_coord(int pos_a, int pos_b, int dim_a, int dim_b,
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void diff_to_canvas(cairo_t *cr, int cx, int cy, float scale,
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struct cro_ctx *old, struct cro_ctx *new)
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struct cro_ctx *old, struct cro_ctx *new,
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const struct area *areas)
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{
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int old_xmin, old_ymin, old_w, old_h;
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int new_xmin, new_ymin, new_w, new_h;
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@ -378,9 +374,12 @@ void diff_to_canvas(cairo_t *cr, int cx, int cy, float scale,
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cairo_surface_flush(s);
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differences(&diff, img_old, img_new);
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show_areas(&diff, img_old);
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cairo_surface_mark_dirty(s);
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free_areas(&diff);
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if (areas) {
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diff.areas = (struct area *) areas;
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show_areas(&diff, img_old);
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}
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cairo_surface_mark_dirty(s);
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cairo_set_source_surface(cr, s, 0, 0);
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cairo_paint(cr);
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@ -14,6 +14,8 @@
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#ifndef GFX_DIFF_H
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#define GFX_DIFF_H
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#include <stdint.h>
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#include <cairo/cairo.h>
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#include "gfx/gfx.h"
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@ -23,7 +25,15 @@
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extern const struct gfx_ops diff_ops;
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struct area {
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int xa, ya, xb, yb;
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uint32_t color;
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struct area *next;
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};
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void diff_to_canvas(cairo_t *cr, int cx, int cy, float scale,
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struct cro_ctx *old, struct cro_ctx *new);
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struct cro_ctx *old, struct cro_ctx *new,
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const struct area *areas);
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#endif /* !GFX_DIFF_H */
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@ -60,6 +60,7 @@ static inline int cd(int x, float scale)
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return x * scale;
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}
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static inline int cx(int x, int xo, float scale)
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{
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return xo + x * scale;
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@ -109,7 +110,7 @@ static void hack(const struct gui_ctx *ctx, cairo_t *cr)
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ctx->old_hist->sheets, ctx->new_hist->sheets, ctx->curr_sheet);
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diff_to_canvas(cr, ctx->x, ctx->y, 1.0 / (1 << ctx->zoom),
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old->gfx_ctx, new->gfx_ctx);
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old->gfx_ctx, new->gfx_ctx, NULL);
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}
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