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Diffstat (limited to 'src/display/sodipodi-ctrl.cpp')
-rw-r--r--src/display/sodipodi-ctrl.cpp238
1 files changed, 126 insertions, 112 deletions
diff --git a/src/display/sodipodi-ctrl.cpp b/src/display/sodipodi-ctrl.cpp
index 202fc206e..5e939ffee 100644
--- a/src/display/sodipodi-ctrl.cpp
+++ b/src/display/sodipodi-ctrl.cpp
@@ -11,7 +11,7 @@
#include <2geom/transforms.h>
#include "sp-canvas-util.h"
#include "sodipodi-ctrl.h"
-#include "libnr/nr-pixops.h"
+#include "display/cairo-utils.h"
enum {
ARG_0,
@@ -125,7 +125,7 @@ sp_ctrl_destroy (GtkObject *object)
ctrl = SP_CTRL (object);
if (ctrl->cache) {
- g_free(ctrl->cache);
+ delete[] ctrl->cache;
ctrl->cache = NULL;
}
@@ -175,11 +175,12 @@ sp_ctrl_set_arg (GtkObject *object, GtkArg *arg, guint arg_id)
sp_canvas_item_request_update (item);
break;
- case ARG_FILL_COLOR:
- ctrl->fill_color = GTK_VALUE_INT (*arg);
+ case ARG_FILL_COLOR: {
+ guint32 fill = GTK_VALUE_INT (*arg);
+ ctrl->fill_color = fill;
ctrl->build = FALSE;
sp_canvas_item_request_update (item);
- break;
+ } break;
case ARG_STROKED:
ctrl->stroked = GTK_VALUE_BOOL (*arg);
@@ -187,11 +188,12 @@ sp_ctrl_set_arg (GtkObject *object, GtkArg *arg, guint arg_id)
sp_canvas_item_request_update (item);
break;
- case ARG_STROKE_COLOR:
- ctrl->stroke_color = GTK_VALUE_INT (*arg);
+ case ARG_STROKE_COLOR: {
+ guint32 stroke = GTK_VALUE_INT (*arg);
+ ctrl->stroke_color = stroke;
ctrl->build = FALSE;
sp_canvas_item_request_update (item);
- break;
+ } break;
case ARG_PIXBUF:
pixbuf = (GdkPixbuf*)(GTK_VALUE_POINTER (*arg));
@@ -297,52 +299,56 @@ sp_ctrl_point (SPCanvasItem *item, Geom::Point p, SPCanvasItem **actual_item)
static void
sp_ctrl_build_cache (SPCtrl *ctrl)
{
- guchar * p, *q;
+ guint32 *p, *q;
gint size, x, y, z, s, a, side, c;
- guint8 fr, fg, fb, fa, sr, sg, sb, sa;
+ guint32 stroke_color, fill_color;
if (ctrl->filled) {
- fr = (ctrl->fill_color >> 24) & 0xff;
- fg = (ctrl->fill_color >> 16) & 0xff;
- fb = (ctrl->fill_color >> 8) & 0xff;
- fa = (ctrl->fill_color) & 0xff;
+ if (ctrl->mode == SP_CTRL_MODE_XOR) {
+ fill_color = ctrl->fill_color;
+ } else {
+ fill_color = argb32_from_rgba(ctrl->fill_color);
+ }
} else {
- fr = 0x00; fg = 0x00; fb = 0x00; fa = 0x00;
+ fill_color = 0;
}
if (ctrl->stroked) {
- sr = (ctrl->stroke_color >> 24) & 0xff;
- sg = (ctrl->stroke_color >> 16) & 0xff;
- sb = (ctrl->stroke_color >> 8) & 0xff;
- sa = (ctrl->stroke_color) & 0xff;
+ if (ctrl->mode == SP_CTRL_MODE_XOR) {
+ stroke_color = ctrl->stroke_color;
+ } else {
+ stroke_color = argb32_from_rgba(ctrl->stroke_color);
+ }
} else {
- sr = fr; sg = fg; sb = fb; sa = fa;
+ stroke_color = fill_color;
}
side = (ctrl->span * 2 +1);
- c = ctrl->span ;
- size = (side) * (side) * 4;
+ c = ctrl->span;
+ size = side * side;
if (side < 2) return;
- if (ctrl->cache)
- g_free (ctrl->cache);
- ctrl->cache = (guchar*)g_malloc (size);
+ if (ctrl->cache) delete[] ctrl->cache;
+ ctrl->cache = new guint32[size];
switch (ctrl->shape) {
case SP_CTRL_SHAPE_SQUARE:
p = ctrl->cache;
+ // top edge
for (x=0; x < side; x++) {
- *p++ = sr; *p++ = sg; *p++ = sb; *p++ = sa;
+ *p++ = stroke_color;
}
+ // middle
for (y = 2; y < side; y++) {
- *p++ = sr; *p++ = sg; *p++ = sb; *p++ = sa;
+ *p++ = stroke_color; // stroke at first and last pixel
for (x=2; x < side; x++) {
- *p++ = fr; *p++ = fg; *p++ = fb; *p++ = fa;
+ *p++ = fill_color; // fill in the middle
}
- *p++ = sr; *p++ = sg; *p++ = sb; *p++ = sa;
+ *p++ = stroke_color;
}
+ // bottom edge
for (x=0; x < side; x++) {
- *p++ = sr; *p++ = sg; *p++ = sb; *p++ = sa;
+ *p++ = stroke_color;
}
ctrl->build = TRUE;
break;
@@ -352,19 +358,20 @@ sp_ctrl_build_cache (SPCtrl *ctrl)
for (y = 0; y < side; y++) {
z = abs (c - y);
for (x = 0; x < z; x++) {
- *p++ = 0x00; *p++ = 0x00; *p++ = 0x00; *p++ = 0x00;
+ *p++ = 0;
}
- *p++ = sr; *p++ = sg; *p++ = sb; *p++ = sa; x++;
+ *p++ = stroke_color; x++;
for (; x < side - z -1; x++) {
- *p++ = fr; *p++ = fg; *p++ = fb; *p++ = fa;
+ *p++ = fill_color;
}
if (z != c) {
- *p++ = sr; *p++ = sg; *p++ = sb; *p++ = sa; x++;
+ *p++ = stroke_color; x++;
}
for (; x < side; x++) {
- *p++ = 0x00; *p++ = 0x00; *p++ = 0x00; *p++ = 0x00;
+ *p++ = 0;
}
}
+ ctrl->build = TRUE;
break;
case SP_CTRL_SHAPE_CIRCLE:
@@ -376,28 +383,28 @@ sp_ctrl_build_cache (SPCtrl *ctrl)
z = (gint)(0.0 + sqrt ((c+.4)*(c+.4) - a*a));
x = 0;
while (x < c-z) {
- *p++ = 0x00; *p++ = 0x00; *p++ = 0x00; *p++ = 0x00;
- *q-- = 0x00; *q-- = 0x00; *q-- = 0x00; *q-- = 0x00;
+ *p++ = 0;
+ *q-- = 0;
x++;
}
do {
- *p++ = sr; *p++ = sg; *p++ = sb; *p++ = sa;
- *q-- = sa; *q-- = sb; *q-- = sg; *q-- = sr;
+ *p++ = stroke_color;
+ *q-- = stroke_color;
x++;
} while (x < c-s);
while (x < MIN(c+s+1, c+z)) {
- *p++ = fr; *p++ = fg; *p++ = fb; *p++ = fa;
- *q-- = fa; *q-- = fb; *q-- = fg; *q-- = fr;
+ *p++ = fill_color;
+ *q-- = fill_color;
x++;
}
do {
- *p++ = sr; *p++ = sg; *p++ = sb; *p++ = sa;
- *q-- = sa; *q-- = sb; *q-- = sg; *q-- = sr;
+ *p++ = stroke_color;
+ *q-- = stroke_color;
x++;
} while (x <= c+z);
while (x < side) {
- *p++ = 0x00; *p++ = 0x00; *p++ = 0x00; *p++ = 0x00;
- *q-- = 0x00; *q-- = 0x00; *q-- = 0x00; *q-- = 0x00;
+ *p++ = 0;
+ *q-- = 0;
x++;
}
s = z;
@@ -410,17 +417,17 @@ sp_ctrl_build_cache (SPCtrl *ctrl)
for (y = 0; y < side; y++) {
z = abs (c - y);
for (x = 0; x < c-z; x++) {
- *p++ = 0x00; *p++ = 0x00; *p++ = 0x00; *p++ = 0x00;
+ *p++ = 0;
}
- *p++ = sr; *p++ = sg; *p++ = sb; *p++ = sa; x++;
+ *p++ = stroke_color; x++;
for (; x < c + z; x++) {
- *p++ = 0x00; *p++ = 0x00; *p++ = 0x00; *p++ = 0x00;
+ *p++ = 0;
}
if (z != 0) {
- *p++ = sr; *p++ = sg; *p++ = sb; *p++ = sa; x++;
+ *p++ = stroke_color; x++;
}
for (; x < side; x++) {
- *p++ = 0x00; *p++ = 0x00; *p++ = 0x00; *p++ = 0x00;
+ *p++ = 0;
}
}
ctrl->build = TRUE;
@@ -433,28 +440,19 @@ sp_ctrl_build_cache (SPCtrl *ctrl)
px = gdk_pixbuf_get_pixels (ctrl->pixbuf);
rs = gdk_pixbuf_get_rowstride (ctrl->pixbuf);
for (y = 0; y < side; y++){
- unsigned char *s, *d;
+ guint32 *d;
+ unsigned char *s;
s = px + y * rs;
- d = ctrl->cache + 4 * side * y;
+ d = ctrl->cache + side * y;
for (x = 0; x < side; x++) {
if (s[3] < 0x80) {
- d[0] = 0x00;
- d[1] = 0x00;
- d[2] = 0x00;
- d[3] = 0x00;
+ *d++ = 0;
} else if (s[0] < 0x80) {
- d[0] = sr;
- d[1] = sg;
- d[2] = sb;
- d[3] = sa;
+ *d++ = stroke_color;
} else {
- d[0] = fr;
- d[1] = fg;
- d[2] = fb;
- d[3] = fa;
+ *d++ = fill_color;
}
s += 4;
- d += 4;
}
}
} else {
@@ -466,16 +464,13 @@ sp_ctrl_build_cache (SPCtrl *ctrl)
case SP_CTRL_SHAPE_IMAGE:
if (ctrl->pixbuf) {
guint r = gdk_pixbuf_get_rowstride (ctrl->pixbuf);
- guchar * pix;
- q = gdk_pixbuf_get_pixels (ctrl->pixbuf);
+ guint32 *px;
+ guchar *data = gdk_pixbuf_get_pixels (ctrl->pixbuf);
p = ctrl->cache;
for (y = 0; y < side; y++){
- pix = q + (y * r);
+ px = reinterpret_cast<guint32*>(data + y * r);
for (x = 0; x < side; x++) {
- *p++ = *pix++;
- *p++ = *pix++;
- *p++ = *pix++;
- *p++ = *pix++;
+ *p++ = *px++;
}
}
} else {
@@ -487,65 +482,84 @@ sp_ctrl_build_cache (SPCtrl *ctrl)
default:
break;
}
-
}
-// composite background, foreground, alpha for xor mode
-#define COMPOSE_X(b,f,a) ( FAST_DIVIDE<255>( ((guchar) b) * ((guchar) (0xff - a)) + ((guchar) ((b ^ ~f) + b/4 - (b>127? 63 : 0))) * ((guchar) a) ) )
-// composite background, foreground, alpha for color mode
-#define COMPOSE_N(b,f,a) ( FAST_DIVIDE<255>( ((guchar) b) * ((guchar) (0xff - a)) + ((guchar) f) * ((guchar) a) ) )
+static inline guint32 compose_xor(guint32 bg, guint32 fg, guint32 a)
+{
+ guint32 c = bg * (255-a) + (((bg ^ ~fg) + (bg >> 2) - (bg > 127 ? 63 : 0)) & 255) * a;
+ return (c + 127) / 255;
+}
static void
sp_ctrl_render (SPCanvasItem *item, SPCanvasBuf *buf)
{
- gint y0, y1, y, x0,x1,x;
- guchar *p, *q, a;
+ //gint y0, y1, y, x0,x1,x;
+ //guchar *p, *q, a;
SPCtrl *ctrl = SP_CTRL (item);
if (!ctrl->defined) return;
if ((!ctrl->filled) && (!ctrl->stroked)) return;
- sp_canvas_prepare_buffer (buf);
-
// the control-image is rendered into ctrl->cache
if (!ctrl->build) {
sp_ctrl_build_cache (ctrl);
}
- // then we render from ctrl->cache
- y0 = MAX (ctrl->box.y0, buf->rect.y0);
- y1 = MIN (ctrl->box.y1, buf->rect.y1 - 1);
- x0 = MAX (ctrl->box.x0, buf->rect.x0);
- x1 = MIN (ctrl->box.x1, buf->rect.x1 - 1);
-
- bool colormode;
-
- for (y = y0; y <= y1; y++) {
- p = buf->buf + (y - buf->rect.y0) * buf->buf_rowstride + (x0 - buf->rect.x0) * 4;
- q = ctrl->cache + ((y - ctrl->box.y0) * (ctrl->span*2+1) + (x0 - ctrl->box.x0)) * 4;
- for (x = x0; x <= x1; x++) {
- a = *(q + 3);
- // 00000000 is the only way to get invisible; all other colors with alpha 00 are treated as mode_color with alpha ff
- colormode = false;
- if (a == 0x00 && !(q[0] == 0x00 && q[1] == 0x00 && q[2] == 0x00)) {
- a = 0xff;
- colormode = true;
- }
- if (ctrl->mode == SP_CTRL_MODE_COLOR || colormode) {
- p[0] = COMPOSE_N (p[0], q[0], a);
- p[1] = COMPOSE_N (p[1], q[1], a);
- p[2] = COMPOSE_N (p[2], q[2], a);
- q += 4;
- p += 4;
- } else if (ctrl->mode == SP_CTRL_MODE_XOR) {
- p[0] = COMPOSE_X (p[0], q[0], a);
- p[1] = COMPOSE_X (p[1], q[1], a);
- p[2] = COMPOSE_X (p[2], q[2], a);
- q += 4;
- p += 4;
+ int w, h;
+ w = h = (ctrl->span * 2 +1);
+
+ // The code below works even when the target is not an image surface
+ if (ctrl->mode == SP_CTRL_MODE_XOR) {
+ // 1. Copy the affected part of output to a temporary surface
+ cairo_surface_t *work = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w, h);
+ cairo_t *cr = cairo_create(work);
+ cairo_translate(cr, -ctrl->box.x0, -ctrl->box.y0);
+ cairo_set_source_surface(cr, cairo_get_target(buf->ct), buf->rect.x0, buf->rect.y0);
+ cairo_paint(cr);
+ cairo_destroy(cr);
+
+ // 2. Composite the control on a temporary surface
+ cairo_surface_flush(work);
+ int strideb = cairo_image_surface_get_stride(work);
+ unsigned char *pxb = cairo_image_surface_get_data(work);
+ guint32 *p = ctrl->cache;
+ for (int i=0; i<h; ++i) {
+ guint32 *pb = reinterpret_cast<guint32*>(pxb + i*strideb);
+ for (int j=0; j<w; ++j) {
+ guint32 cc = *p++;
+ guint32 ac = cc & 0xff;
+ if (ac == 0 && cc != 0) {
+ *pb++ = argb32_from_rgba(cc | 0x000000ff);
+ } else {
+ EXTRACT_ARGB32(*pb, ab,rb,gb,bb)
+ guint32 ro = compose_xor(rb, (cc & 0xff000000) >> 24, ac);
+ guint32 go = compose_xor(gb, (cc & 0x00ff0000) >> 16, ac);
+ guint32 bo = compose_xor(bb, (cc & 0x0000ff00) >> 8, ac);
+ ASSEMBLE_ARGB32(px, ab,ro,go,bo)
+ *pb++ = px;
+ }
}
}
+ cairo_surface_mark_dirty(work);
+
+ // 3. Replace the affected part of output with contents of temporary surface
+ cairo_save(buf->ct);
+ cairo_set_source_surface(buf->ct, work,
+ ctrl->box.x0 - buf->rect.x0, ctrl->box.y0 - buf->rect.y0);
+ cairo_rectangle(buf->ct, ctrl->box.x0 - buf->rect.x0, ctrl->box.y0 - buf->rect.y0, w, h);
+ cairo_clip(buf->ct);
+ cairo_set_operator(buf->ct, CAIRO_OPERATOR_SOURCE);
+ cairo_paint(buf->ct);
+ cairo_restore(buf->ct);
+ cairo_surface_destroy(work);
+ } else {
+ cairo_surface_t *cache = cairo_image_surface_create_for_data(
+ reinterpret_cast<unsigned char*>(ctrl->cache), CAIRO_FORMAT_ARGB32, w, h, w*4);
+ cairo_set_source_surface(buf->ct, cache,
+ ctrl->box.x0 - buf->rect.x0, ctrl->box.y0 - buf->rect.y0);
+ cairo_paint(buf->ct);
+ cairo_surface_destroy(cache);
}
ctrl->shown = TRUE;
}
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