void gimp_display_shell_render (GimpDisplayShell *shell, cairo_t *cr, gint x, gint y, gint w, gint h) { GimpImage *image; GeglBuffer *buffer; #ifdef USE_NODE_BLIT GeglNode *node; #endif gdouble scale_x = 1.0; gdouble scale_y = 1.0; gdouble buffer_scale = 1.0; gint viewport_offset_x; gint viewport_offset_y; gint viewport_width; gint viewport_height; gint scaled_x; gint scaled_y; gint scaled_width; gint scaled_height; cairo_surface_t *xfer; gint xfer_src_x; gint xfer_src_y; gint mask_src_x = 0; gint mask_src_y = 0; gint cairo_stride; guchar *cairo_data; GeglBuffer *cairo_buffer; g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell)); g_return_if_fail (cr != NULL); g_return_if_fail (w > 0 && h > 0); image = gimp_display_get_image (shell->display); buffer = gimp_pickable_get_buffer (GIMP_PICKABLE (image)); #ifdef USE_NODE_BLIT node = gimp_projectable_get_graph (GIMP_PROJECTABLE (image)); #endif #ifdef GIMP_DISPLAY_RENDER_ENABLE_SCALING /* if we had this future API, things would look pretty on hires (retina) */ scale_x = gdk_window_get_scale_factor (gtk_widget_get_window (gtk_widget_get_toplevel (GTK_WIDGET (shell)))); #endif scale_x = MIN (scale_x, GIMP_DISPLAY_RENDER_MAX_SCALE); scale_y = scale_x; if (shell->scale_x > shell->scale_y) { scale_y *= (shell->scale_x / shell->scale_y); buffer_scale = shell->scale_y * scale_y; } else if (shell->scale_y > shell->scale_x) { scale_x *= (shell->scale_y / shell->scale_x); buffer_scale = shell->scale_x * scale_x; } else { buffer_scale = shell->scale_x * scale_x; } gimp_display_shell_scroll_get_scaled_viewport (shell, &viewport_offset_x, &viewport_offset_y, &viewport_width, &viewport_height); scaled_x = floor ((x + viewport_offset_x) * scale_x); scaled_y = floor ((y + viewport_offset_y) * scale_y); scaled_width = ceil (w * scale_x); scaled_height = ceil (h * scale_y); if (shell->rotate_transform) { xfer = cairo_surface_create_similar_image (cairo_get_target (cr), CAIRO_FORMAT_ARGB32, scaled_width, scaled_height); cairo_surface_mark_dirty (xfer); xfer_src_x = 0; xfer_src_y = 0; } else { xfer = gimp_display_xfer_get_surface (shell->xfer, scaled_width, scaled_height, &xfer_src_x, &xfer_src_y); } cairo_stride = cairo_image_surface_get_stride (xfer); cairo_data = cairo_image_surface_get_data (xfer) + xfer_src_y * cairo_stride + xfer_src_x * 4; cairo_buffer = gegl_buffer_linear_new_from_data (cairo_data, babl_format ("cairo-ARGB32"), GEGL_RECTANGLE (0, 0, scaled_width, scaled_height), cairo_stride, NULL, NULL); if (shell->profile_transform || gimp_display_shell_has_filter (shell)) { gboolean can_convert_to_u8; /* if there is a profile transform or a display filter, we need * to use temp buffers */ can_convert_to_u8 = gimp_display_shell_profile_can_convert_to_u8 (shell); /* create the filter buffer if we have filters */ if ((gimp_display_shell_has_filter (shell) || ! can_convert_to_u8) && ! shell->filter_buffer) { gint w = GIMP_DISPLAY_RENDER_BUF_WIDTH * GIMP_DISPLAY_RENDER_MAX_SCALE; gint h = GIMP_DISPLAY_RENDER_BUF_HEIGHT * GIMP_DISPLAY_RENDER_MAX_SCALE; shell->filter_data = gegl_malloc (w * h * babl_format_get_bytes_per_pixel (shell->filter_format)); shell->filter_stride = w * babl_format_get_bytes_per_pixel (shell->filter_format); shell->filter_buffer = gegl_buffer_linear_new_from_data (shell->filter_data, shell->filter_format, GEGL_RECTANGLE (0, 0, w, h), GEGL_AUTO_ROWSTRIDE, (GDestroyNotify) gegl_free, shell->filter_data); } if (shell->profile_transform) { /* if there is a profile transform, load the projection * pixels into the profile_buffer */ #ifndef USE_NODE_BLIT gegl_buffer_get (buffer, GEGL_RECTANGLE (scaled_x, scaled_y, scaled_width, scaled_height), buffer_scale, gimp_projectable_get_format (GIMP_PROJECTABLE (image)), shell->profile_data, shell->profile_stride, GEGL_ABYSS_CLAMP); #else gegl_node_blit (node, buffer_scale, GEGL_RECTANGLE (scaled_x, scaled_y, scaled_width, scaled_height), gimp_projectable_get_format (GIMP_PROJECTABLE (image)), shell->profile_data, shell->profile_stride, GEGL_BLIT_CACHE); #endif if (gimp_display_shell_has_filter (shell) || ! can_convert_to_u8) { /* if there are filters, convert the pixels from the * profile_buffer to the filter_buffer */ gimp_display_shell_profile_convert_buffer (shell, shell->profile_buffer, GEGL_RECTANGLE (0, 0, scaled_width, scaled_height), shell->filter_buffer, GEGL_RECTANGLE (0, 0, scaled_width, scaled_height)); } else { /* otherwise, convert the profile_buffer directly into * the cairo_buffer */ gimp_display_shell_profile_convert_buffer (shell, shell->profile_buffer, GEGL_RECTANGLE (0, 0, scaled_width, scaled_height), cairo_buffer, GEGL_RECTANGLE (0, 0, scaled_width, scaled_height)); } } else { /* otherwise, load the projection pixels directly into the * filter_buffer */ #ifndef USE_NODE_BLIT gegl_buffer_get (buffer, GEGL_RECTANGLE (scaled_x, scaled_y, scaled_width, scaled_height), buffer_scale, shell->filter_format, shell->filter_data, shell->filter_stride, GEGL_ABYSS_CLAMP); #else gegl_node_blit (node, buffer_scale, GEGL_RECTANGLE (scaled_x, scaled_y, scaled_width, scaled_height), shell->filter_format, shell->filter_data, shell->filter_stride, GEGL_BLIT_CACHE); #endif } if (gimp_display_shell_has_filter (shell)) { /* convert the filter_buffer in place */ gimp_color_display_stack_convert_buffer (shell->filter_stack, shell->filter_buffer, GEGL_RECTANGLE (0, 0, scaled_width, scaled_height)); } if (gimp_display_shell_has_filter (shell) || ! can_convert_to_u8) { /* finally, copy the filter buffer to the cairo-ARGB32 buffer */ gegl_buffer_get (shell->filter_buffer, GEGL_RECTANGLE (0, 0, scaled_width, scaled_height), 1.0, babl_format ("cairo-ARGB32"), cairo_data, cairo_stride, GEGL_ABYSS_CLAMP); } } else { /* otherwise we can copy the projection pixels straight to the * cairo-ARGB32 buffer */ #ifndef USE_NODE_BLIT gegl_buffer_get (buffer, GEGL_RECTANGLE (scaled_x, scaled_y, scaled_width, scaled_height), buffer_scale, babl_format ("cairo-ARGB32"), cairo_data, cairo_stride, GEGL_ABYSS_CLAMP); #else gegl_node_blit (node, buffer_scale, GEGL_RECTANGLE (scaled_x, scaled_y, scaled_width, scaled_height), babl_format ("cairo-ARGB32"), cairo_data, cairo_stride, GEGL_BLIT_CACHE); #endif } g_object_unref (cairo_buffer); if (shell->mask) { if (! shell->mask_surface) { shell->mask_surface = cairo_image_surface_create (CAIRO_FORMAT_A8, GIMP_DISPLAY_RENDER_BUF_WIDTH * GIMP_DISPLAY_RENDER_MAX_SCALE, GIMP_DISPLAY_RENDER_BUF_HEIGHT * GIMP_DISPLAY_RENDER_MAX_SCALE); } cairo_surface_mark_dirty (shell->mask_surface); cairo_stride = cairo_image_surface_get_stride (shell->mask_surface); cairo_data = cairo_image_surface_get_data (shell->mask_surface) + mask_src_y * cairo_stride + mask_src_x * 4; gegl_buffer_get (shell->mask, GEGL_RECTANGLE (scaled_x - shell->mask_offset_x, scaled_y - shell->mask_offset_y, scaled_width, scaled_height), buffer_scale, babl_format ("Y u8"), cairo_data, cairo_stride, GEGL_ABYSS_NONE); if (shell->mask_inverted) { gint mask_height = scaled_height; while (mask_height--) { gint mask_width = scaled_width; guchar *d = cairo_data; while (mask_width--) { guchar inv = 255 - *d; *d++ = inv; } cairo_data += cairo_stride; } } } /* put it to the screen */ cairo_save (cr); cairo_rectangle (cr, x, y, w, h); cairo_scale (cr, 1.0 / scale_x, 1.0 / scale_y); cairo_set_source_surface (cr, xfer, x * scale_x - xfer_src_x, y * scale_y - xfer_src_y); if (shell->rotate_transform) { cairo_pattern_t *pattern; pattern = cairo_get_source (cr); cairo_pattern_set_extend (pattern, CAIRO_EXTEND_PAD); cairo_set_line_width (cr, 1.0); cairo_stroke_preserve (cr); cairo_surface_destroy (xfer); } cairo_clip (cr); cairo_paint (cr); if (shell->mask) { gimp_cairo_set_source_rgba (cr, &shell->mask_color); cairo_mask_surface (cr, shell->mask_surface, (x - mask_src_x) * scale_x, (y - mask_src_y) * scale_y); } cairo_restore (cr); }
void gimp_display_shell_render (GimpDisplayShell *shell, cairo_t *cr, gint x, gint y, gint w, gint h) { GimpImage *image; GimpProjection *projection; GeglBuffer *buffer; gdouble scale_x = 1.0; gdouble scale_y = 1.0; gdouble buffer_scale = 1.0; gint viewport_offset_x; gint viewport_offset_y; gint viewport_width; gint viewport_height; gint scaled_x; gint scaled_y; gint scaled_width; gint scaled_height; cairo_surface_t *xfer; gint xfer_src_x; gint xfer_src_y; gint mask_src_x = 0; gint mask_src_y = 0; gint stride; guchar *data; g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell)); g_return_if_fail (cr != NULL); g_return_if_fail (w > 0 && h > 0); image = gimp_display_get_image (shell->display); projection = gimp_image_get_projection (image); buffer = gimp_pickable_get_buffer (GIMP_PICKABLE (projection)); #ifdef GIMP_DISPLAY_RENDER_ENABLE_SCALING /* if we had this future API, things would look pretty on hires (retina) */ scale_x = gdk_window_get_scale_factor (gtk_widget_get_window (gtk_widget_get_toplevel (GTK_WIDGET (shell)))); #endif scale_x = MIN (scale_x, GIMP_DISPLAY_RENDER_MAX_SCALE); scale_y = scale_x; if (shell->scale_x > shell->scale_y) { scale_y *= (shell->scale_x / shell->scale_y); buffer_scale = shell->scale_y * scale_y; } else if (shell->scale_y > shell->scale_x) { scale_x *= (shell->scale_y / shell->scale_x); buffer_scale = shell->scale_x * scale_x; } else { buffer_scale = shell->scale_x * scale_x; } gimp_display_shell_scroll_get_scaled_viewport (shell, &viewport_offset_x, &viewport_offset_y, &viewport_width, &viewport_height); scaled_x = floor ((x + viewport_offset_x) * scale_x); scaled_y = floor ((y + viewport_offset_y) * scale_y); scaled_width = ceil (w * scale_x); scaled_height = ceil (h * scale_y); if (shell->rotate_transform) { xfer = cairo_surface_create_similar_image (cairo_get_target (cr), CAIRO_FORMAT_ARGB32, scaled_width, scaled_height); cairo_surface_mark_dirty (xfer); xfer_src_x = 0; xfer_src_y = 0; } else { xfer = gimp_display_xfer_get_surface (shell->xfer, scaled_width, scaled_height, &xfer_src_x, &xfer_src_y); } stride = cairo_image_surface_get_stride (xfer); data = cairo_image_surface_get_data (xfer); data += xfer_src_y * stride + xfer_src_x * 4; /* apply filters to the rendered projection */ if (shell->filter_stack) { const Babl *filter_format = babl_format ("R'G'B'A float"); if (! shell->filter_buffer) { gint w = GIMP_DISPLAY_RENDER_BUF_WIDTH * GIMP_DISPLAY_RENDER_MAX_SCALE; gint h = GIMP_DISPLAY_RENDER_BUF_HEIGHT * GIMP_DISPLAY_RENDER_MAX_SCALE; shell->filter_data = gegl_malloc (w * h * babl_format_get_bytes_per_pixel (filter_format)); shell->filter_stride = w * babl_format_get_bytes_per_pixel (filter_format); shell->filter_buffer = gegl_buffer_linear_new_from_data (shell->filter_data, filter_format, GEGL_RECTANGLE (0, 0, w, h), GEGL_AUTO_ROWSTRIDE, (GDestroyNotify) gegl_free, shell->filter_data); } gegl_buffer_get (buffer, GEGL_RECTANGLE (scaled_x, scaled_y, scaled_width, scaled_height), buffer_scale, filter_format, shell->filter_data, shell->filter_stride, GEGL_ABYSS_CLAMP); gimp_color_display_stack_convert_buffer (shell->filter_stack, shell->filter_buffer, GEGL_RECTANGLE (0, 0, scaled_width, scaled_height)); gegl_buffer_get (shell->filter_buffer, GEGL_RECTANGLE (0, 0, scaled_width, scaled_height), 1.0, babl_format ("cairo-ARGB32"), data, stride, GEGL_ABYSS_CLAMP); } else { gegl_buffer_get (buffer, GEGL_RECTANGLE (scaled_x, scaled_y, scaled_width, scaled_height), buffer_scale, babl_format ("cairo-ARGB32"), data, stride, GEGL_ABYSS_CLAMP); } if (shell->mask) { gint mask_height; if (! shell->mask_surface) { shell->mask_surface = cairo_image_surface_create (CAIRO_FORMAT_A8, GIMP_DISPLAY_RENDER_BUF_WIDTH * GIMP_DISPLAY_RENDER_MAX_SCALE, GIMP_DISPLAY_RENDER_BUF_HEIGHT * GIMP_DISPLAY_RENDER_MAX_SCALE); } cairo_surface_mark_dirty (shell->mask_surface); stride = cairo_image_surface_get_stride (shell->mask_surface); data = cairo_image_surface_get_data (shell->mask_surface); data += mask_src_y * stride + mask_src_x * 4; gegl_buffer_get (shell->mask, GEGL_RECTANGLE (scaled_x, scaled_y, scaled_width, scaled_height), buffer_scale, babl_format ("Y u8"), data, stride, GEGL_ABYSS_CLAMP); /* invert the mask so what is *not* the foreground object is masked */ mask_height = scaled_height; while (mask_height--) { gint mask_width = scaled_width; guchar *d = data; while (mask_width--) { guchar inv = 255 - *d; *d++ = inv; } data += stride; } } /* put it to the screen */ cairo_save (cr); cairo_rectangle (cr, x, y, w, h); cairo_scale (cr, 1.0 / scale_x, 1.0 / scale_y); cairo_set_source_surface (cr, xfer, x * scale_x - xfer_src_x, y * scale_y - xfer_src_y); if (shell->rotate_transform) { cairo_pattern_t *pattern; pattern = cairo_get_source (cr); cairo_pattern_set_extend (pattern, CAIRO_EXTEND_PAD); cairo_set_line_width (cr, 1.0); cairo_stroke_preserve (cr); cairo_surface_destroy (xfer); } cairo_clip (cr); cairo_paint (cr); if (shell->mask) { gimp_cairo_set_source_rgba (cr, &shell->mask_color); cairo_mask_surface (cr, shell->mask_surface, (x - mask_src_x) * scale_x, (y - mask_src_y) * scale_y); } cairo_restore (cr); }