static void
gimp_view_renderer_palette_render (GimpViewRenderer *renderer,
GtkWidget *widget)
{
GimpViewRendererPalette *renderpal = GIMP_VIEW_RENDERER_PALETTE (renderer);
GimpPalette *palette;
guchar *row;
guchar *dest;
GList *list;
gdouble cell_width;
gint grid_width;
gint dest_stride;
gint y;
palette = GIMP_PALETTE (renderer->viewable);
if (palette->n_colors < 1)
return;
grid_width = renderpal->draw_grid ? 1 : 0;
if (renderpal->cell_size > 0)
{
if (palette->n_columns > 0)
cell_width = MAX ((gdouble) renderpal->cell_size,
(gdouble) (renderer->width - grid_width) /
(gdouble) palette->n_columns);
else
cell_width = renderpal->cell_size;
}
else
{
if (palette->n_columns > 0)
cell_width = ((gdouble) (renderer->width - grid_width) /
(gdouble) palette->n_columns);
else
cell_width = (gdouble) (renderer->width - grid_width) / 16.0;
}
cell_width = MAX (4.0, cell_width);
renderpal->cell_width = cell_width;
renderpal->columns = (gdouble) (renderer->width - grid_width) / cell_width;
renderpal->rows = palette->n_colors / renderpal->columns;
if (palette->n_colors % renderpal->columns)
renderpal->rows += 1;
renderpal->cell_height = MAX (4, ((renderer->height - grid_width) /
renderpal->rows));
if (! renderpal->draw_grid)
renderpal->cell_height = MIN (renderpal->cell_height,
renderpal->cell_width);
list = palette->colors;
if (! renderer->surface)
renderer->surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
renderer->width,
renderer->height);
cairo_surface_flush (renderer->surface);
row = g_new (guchar, renderer->width * 4);
dest = cairo_image_surface_get_data (renderer->surface);
dest_stride = cairo_image_surface_get_stride (renderer->surface);
for (y = 0; y < renderer->height; y++)
{
if ((y % renderpal->cell_height) == 0)
{
guchar r, g, b;
gint x;
gint n = 0;
guchar *d = row;
memset (row, renderpal->draw_grid ? 0 : 255, renderer->width * 4);
r = g = b = (renderpal->draw_grid ? 0 : 255);
for (x = 0; x < renderer->width; x++, d += 4)
{
if ((x % renderpal->cell_width) == 0)
{
if (list && n < renderpal->columns &&
renderer->width - x >= renderpal->cell_width)
{
GimpPaletteEntry *entry = list->data;
list = g_list_next (list);
n++;
gimp_rgb_get_uchar (&entry->color, &r, &g, &b);
}
else
{
r = g = b = (renderpal->draw_grid ? 0 : 255);
}
}
if (renderpal->draw_grid && (x % renderpal->cell_width) == 0)
{
GIMP_CAIRO_RGB24_SET_PIXEL (d, 0, 0, 0);
}
else
{
GIMP_CAIRO_RGB24_SET_PIXEL (d, r, g, b);
}
}
}
if (renderpal->draw_grid && (y % renderpal->cell_height) == 0)
{
memset (dest, 0, renderer->width * 4);
}
else
{
memcpy (dest, row, renderer->width * 4);
}
dest += dest_stride;
}
g_free (row);
cairo_surface_mark_dirty (renderer->surface);
renderer->needs_render = FALSE;
}
static gboolean
gimp_color_bar_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GimpColorBar *bar = GIMP_COLOR_BAR (widget);
cairo_t *cr;
GtkAllocation allocation;
cairo_surface_t *surface;
cairo_pattern_t *pattern;
guchar *src;
guchar *dest;
gint x, y;
gint width, height;
gint i;
cr = gdk_cairo_create (event->window);
gdk_cairo_region (cr, event->region);
cairo_clip (cr);
gtk_widget_get_allocation (widget, &allocation);
x = y = gtk_container_get_border_width (GTK_CONTAINER (bar));
width = allocation.width - 2 * x;
height = allocation.height - 2 * y;
if (width < 1 || height < 1)
return TRUE;
cairo_translate (cr, allocation.x + x, allocation.y + y);
cairo_rectangle (cr, 0, 0, width, height);
cairo_clip (cr);
surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, 256, 1);
for (i = 0, src = bar->buf, dest = cairo_image_surface_get_data (surface);
i < 256;
i++, src += 3, dest += 4)
{
GIMP_CAIRO_RGB24_SET_PIXEL(dest, src[0], src[1], src[2]);
}
cairo_surface_mark_dirty (surface);
pattern = cairo_pattern_create_for_surface (surface);
cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REFLECT);
cairo_surface_destroy (surface);
if (bar->orientation == GTK_ORIENTATION_HORIZONTAL)
{
cairo_scale (cr, (gdouble) width / 256.0, 1.0);
}
else
{
cairo_translate (cr, 0, height);
cairo_scale (cr, 1.0, (gdouble) height / 256.0);
cairo_rotate (cr, - G_PI / 2);
}
cairo_set_source (cr, pattern);
cairo_pattern_destroy (pattern);
cairo_paint (cr);
cairo_destroy (cr);
return TRUE;
}
static void
compute_preview (gint startx, gint starty, gint w, gint h)
{
gint xcnt, ycnt, f1, f2;
guchar r, g, b;
gdouble imagex, imagey;
gint32 index = 0;
GimpRGB color;
GimpRGB lightcheck, darkcheck;
GimpVector3 pos;
get_ray_func ray_func;
if (xpostab_size != w)
{
if (xpostab)
{
g_free (xpostab);
xpostab = NULL;
}
}
if (!xpostab)
{
xpostab = g_new (gdouble, w);
xpostab_size = w;
}
if (ypostab_size != h)
{
if (ypostab)
{
g_free (ypostab);
ypostab = NULL;
}
}
if (!ypostab)
{
ypostab = g_new (gdouble, h);
ypostab_size = h;
}
for (xcnt = 0; xcnt < w; xcnt++)
xpostab[xcnt] = (gdouble) width *((gdouble) xcnt / (gdouble) w);
for (ycnt = 0; ycnt < h; ycnt++)
ypostab[ycnt] = (gdouble) height *((gdouble) ycnt / (gdouble) h);
precompute_init (width, height);
gimp_rgba_set (&lightcheck,
GIMP_CHECK_LIGHT, GIMP_CHECK_LIGHT, GIMP_CHECK_LIGHT,
1.0);
gimp_rgba_set (&darkcheck, GIMP_CHECK_DARK, GIMP_CHECK_DARK,
GIMP_CHECK_DARK, 1.0);
if (mapvals.bump_mapped == TRUE && mapvals.bumpmap_id != -1)
{
gimp_pixel_rgn_init (&bump_region,
gimp_drawable_get (mapvals.bumpmap_id),
0, 0, width, height, FALSE, FALSE);
}
imagey = 0;
if (mapvals.previewquality)
ray_func = get_ray_color;
else
ray_func = get_ray_color_no_bilinear;
if (mapvals.env_mapped == TRUE && mapvals.envmap_id != -1)
{
env_width = gimp_drawable_width (mapvals.envmap_id);
env_height = gimp_drawable_height (mapvals.envmap_id);
gimp_pixel_rgn_init (&env_region,
gimp_drawable_get (mapvals.envmap_id), 0,
0, env_width, env_height, FALSE, FALSE);
if (mapvals.previewquality)
ray_func = get_ray_color_ref;
else
ray_func = get_ray_color_no_bilinear_ref;
}
cairo_surface_flush (preview_surface);
for (ycnt = 0; ycnt < PREVIEW_HEIGHT; ycnt++)
{
index = ycnt * preview_rgb_stride;
for (xcnt = 0; xcnt < PREVIEW_WIDTH; xcnt++)
{
if ((ycnt >= starty && ycnt < (starty + h)) &&
(xcnt >= startx && xcnt < (startx + w)))
{
imagex = xpostab[xcnt - startx];
imagey = ypostab[ycnt - starty];
pos = int_to_posf (imagex, imagey);
if (mapvals.bump_mapped == TRUE &&
mapvals.bumpmap_id != -1 &&
xcnt == startx)
{
pos_to_float (pos.x, pos.y, &imagex, &imagey);
precompute_normals (0, width, RINT (imagey));
}
color = (*ray_func) (&pos);
if (color.a < 1.0)
{
f1 = ((xcnt % 32) < 16);
f2 = ((ycnt % 32) < 16);
f1 = f1 ^ f2;
if (f1)
{
if (color.a == 0.0)
color = lightcheck;
else
gimp_rgb_composite (&color,
&lightcheck,
GIMP_RGB_COMPOSITE_BEHIND);
}
else
{
if (color.a == 0.0)
color = darkcheck;
else
gimp_rgb_composite (&color,
&darkcheck,
GIMP_RGB_COMPOSITE_BEHIND);
}
}
gimp_rgb_get_uchar (&color, &r, &g, &b);
GIMP_CAIRO_RGB24_SET_PIXEL((preview_rgb_data + index), r, g, b);
index += 4;
imagex++;
}
else
{
preview_rgb_data[index++] = 200;
preview_rgb_data[index++] = 200;
preview_rgb_data[index++] = 200;
index++;
}
}
}
cairo_surface_mark_dirty (preview_surface);
}
static gboolean
select_area_expose (GtkWidget *widget,
GdkEventExpose *event)
{
cairo_t *cr;
GtkAllocation allocation;
gdouble dx;
gdouble dy;
cairo_surface_t *surface;
guchar *dest;
gdouble y;
gint j;
cr = gdk_cairo_create (event->window);
gdk_cairo_region (cr, event->region);
cairo_clip (cr);
gtk_widget_get_allocation (widget, &allocation);
dx = 1.0 / allocation.width;
dy = 1.0 / allocation.height;
surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
event->area.width,
event->area.height);
dest = cairo_image_surface_get_data (surface);
for (j = 0, y = event->area.y / allocation.height;
j < event->area.height;
j++, y += dy)
{
guchar *d = dest;
gdouble r = calc (0, y, 0);
gdouble g = calc (0, y, 120);
gdouble b = calc (0, y, 240);
gdouble dr = calc (dx, y, 0) - r;
gdouble dg = calc (dx, y, 120) - g;
gdouble db = calc (dx, y, 240) - b;
gint i;
r += event->area.x * dr;
g += event->area.x * dg;
b += event->area.x * db;
for (i = 0; i < event->area.width; i++)
{
GIMP_CAIRO_RGB24_SET_PIXEL (d,
CLAMP ((gint) r, 0, 255),
CLAMP ((gint) g, 0, 255),
CLAMP ((gint) b, 0, 255));
r += dr;
g += dg;
b += db;
d += 4;
}
dest += cairo_image_surface_get_stride (surface);
}
cairo_surface_mark_dirty (surface);
cairo_set_source_surface (cr, surface,
event->area.x, event->area.y);
cairo_surface_destroy (surface);
cairo_paint (cr);
cairo_destroy (cr);
return FALSE;
}
static void
gimp_color_area_render_buf (GtkWidget *widget,
gboolean insensitive,
GimpColorAreaType type,
guchar *buf,
guint width,
guint height,
guint rowstride,
GimpRGB *color)
{
GtkStyle *style = gtk_widget_get_style (widget);
guint x, y;
guint check_size = 0;
guchar light[3];
guchar dark[3];
guchar opaque[3];
guchar insens[3];
guchar *p;
gdouble frac;
switch (type)
{
case GIMP_COLOR_AREA_FLAT:
check_size = 0;
break;
case GIMP_COLOR_AREA_SMALL_CHECKS:
check_size = GIMP_CHECK_SIZE_SM;
break;
case GIMP_COLOR_AREA_LARGE_CHECKS:
check_size = GIMP_CHECK_SIZE;
break;
}
gimp_rgb_get_uchar (color, opaque, opaque + 1, opaque + 2);
insens[0] = style->bg[GTK_STATE_INSENSITIVE].red >> 8;
insens[1] = style->bg[GTK_STATE_INSENSITIVE].green >> 8;
insens[2] = style->bg[GTK_STATE_INSENSITIVE].blue >> 8;
if (insensitive || check_size == 0 || color->a == 1.0)
{
for (y = 0; y < height; y++)
{
p = buf + y * rowstride;
for (x = 0; x < width; x++)
{
if (insensitive && ((x + y) % 2))
{
GIMP_CAIRO_RGB24_SET_PIXEL (p,
insens[0],
insens[1],
insens[2]);
}
else
{
GIMP_CAIRO_RGB24_SET_PIXEL (p,
opaque[0],
opaque[1],
opaque[2]);
}
p += 4;
}
}
return;
}
light[0] = (GIMP_CHECK_LIGHT +
(color->r - GIMP_CHECK_LIGHT) * color->a) * 255.999;
light[1] = (GIMP_CHECK_LIGHT +
(color->g - GIMP_CHECK_LIGHT) * color->a) * 255.999;
light[2] = (GIMP_CHECK_LIGHT +
(color->b - GIMP_CHECK_LIGHT) * color->a) * 255.999;
dark[0] = (GIMP_CHECK_DARK +
(color->r - GIMP_CHECK_DARK) * color->a) * 255.999;
dark[1] = (GIMP_CHECK_DARK +
(color->g - GIMP_CHECK_DARK) * color->a) * 255.999;
dark[2] = (GIMP_CHECK_DARK +
(color->b - GIMP_CHECK_DARK) * color->a) * 255.999;
for (y = 0; y < height; y++)
{
p = buf + y * rowstride;
for (x = 0; x < width; x++)
{
if ((width - x) * height > y * width)
{
GIMP_CAIRO_RGB24_SET_PIXEL (p,
opaque[0],
opaque[1],
opaque[2]);
p += 4;
continue;
}
frac = y - (gdouble) ((width - x) * height) / (gdouble) width;
if (((x / check_size) ^ (y / check_size)) & 1)
{
if ((gint) frac)
{
GIMP_CAIRO_RGB24_SET_PIXEL (p,
light[0],
light[1],
light[2]);
}
else
{
GIMP_CAIRO_RGB24_SET_PIXEL (p,
((gdouble) light[0] * frac +
(gdouble) opaque[0] * (1.0 - frac)),
((gdouble) light[1] * frac +
(gdouble) opaque[1] * (1.0 - frac)),
((gdouble) light[2] * frac +
(gdouble) opaque[2] * (1.0 - frac)));
}
}
else
{
if ((gint) frac)
{
GIMP_CAIRO_RGB24_SET_PIXEL (p,
dark[0],
dark[1],
dark[2]);
}
else
{
GIMP_CAIRO_RGB24_SET_PIXEL (p,
((gdouble) dark[0] * frac +
(gdouble) opaque[0] * (1.0 - frac)),
((gdouble) dark[1] * frac +
(gdouble) opaque[1] * (1.0 - frac)),
((gdouble) dark[2] * frac +
(gdouble) opaque[2] * (1.0 - frac)));
}
}
p += 4;
}
}
}