270 lines
9.1 KiB
C
270 lines
9.1 KiB
C
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/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* pikaviewrendererbrush.c
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* Copyright (C) 2003 Michael Natterer <mitch@gimp.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gegl.h>
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#include <gtk/gtk.h>
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#include "widgets-types.h"
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#include "core/pikabrushpipe.h"
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#include "core/pikabrushgenerated.h"
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#include "core/pikatempbuf.h"
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#include "pikaviewrendererbrush.h"
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static void pika_view_renderer_brush_finalize (GObject *object);
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static void pika_view_renderer_brush_render (PikaViewRenderer *renderer,
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GtkWidget *widget);
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static void pika_view_renderer_brush_draw (PikaViewRenderer *renderer,
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GtkWidget *widget,
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cairo_t *cr,
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gint available_width,
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gint available_height);
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static gboolean pika_view_renderer_brush_render_timeout (gpointer data);
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G_DEFINE_TYPE (PikaViewRendererBrush, pika_view_renderer_brush,
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PIKA_TYPE_VIEW_RENDERER)
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#define parent_class pika_view_renderer_brush_parent_class
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static void
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pika_view_renderer_brush_class_init (PikaViewRendererBrushClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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PikaViewRendererClass *renderer_class = PIKA_VIEW_RENDERER_CLASS (klass);
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object_class->finalize = pika_view_renderer_brush_finalize;
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renderer_class->render = pika_view_renderer_brush_render;
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renderer_class->draw = pika_view_renderer_brush_draw;
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}
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static void
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pika_view_renderer_brush_init (PikaViewRendererBrush *renderer)
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{
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renderer->pipe_timeout_id = 0;
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renderer->pipe_animation_index = 0;
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}
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static void
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pika_view_renderer_brush_finalize (GObject *object)
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{
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PikaViewRendererBrush *renderer = PIKA_VIEW_RENDERER_BRUSH (object);
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if (renderer->pipe_timeout_id)
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{
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g_source_remove (renderer->pipe_timeout_id);
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renderer->pipe_timeout_id = 0;
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}
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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pika_view_renderer_brush_render (PikaViewRenderer *renderer,
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GtkWidget *widget)
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{
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PikaViewRendererBrush *renderbrush = PIKA_VIEW_RENDERER_BRUSH (renderer);
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PikaTempBuf *temp_buf;
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gint temp_buf_x = 0;
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gint temp_buf_y = 0;
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gint temp_buf_width;
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gint temp_buf_height;
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if (renderbrush->pipe_timeout_id)
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{
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g_source_remove (renderbrush->pipe_timeout_id);
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renderbrush->pipe_timeout_id = 0;
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}
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temp_buf = pika_viewable_get_new_preview (renderer->viewable,
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renderer->context,
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renderer->width,
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renderer->height);
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temp_buf_width = pika_temp_buf_get_width (temp_buf);
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temp_buf_height = pika_temp_buf_get_height (temp_buf);
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if (temp_buf_width < renderer->width)
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temp_buf_x = (renderer->width - temp_buf_width) / 2;
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if (temp_buf_height < renderer->height)
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temp_buf_y = (renderer->height - temp_buf_height) / 2;
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if (renderer->is_popup)
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{
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pika_view_renderer_render_temp_buf (renderer, widget, temp_buf,
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temp_buf_x, temp_buf_y,
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-1,
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PIKA_VIEW_BG_WHITE,
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PIKA_VIEW_BG_WHITE);
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pika_temp_buf_unref (temp_buf);
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if (PIKA_IS_BRUSH_PIPE (renderer->viewable))
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{
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renderbrush->widget = widget;
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renderbrush->pipe_animation_index = 0;
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renderbrush->pipe_timeout_id =
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g_timeout_add (300, pika_view_renderer_brush_render_timeout,
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renderbrush);
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}
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return;
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}
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pika_view_renderer_render_temp_buf (renderer, widget, temp_buf,
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temp_buf_x, temp_buf_y,
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-1,
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PIKA_VIEW_BG_WHITE,
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PIKA_VIEW_BG_WHITE);
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pika_temp_buf_unref (temp_buf);
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}
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static gboolean
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pika_view_renderer_brush_render_timeout (gpointer data)
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{
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PikaViewRendererBrush *renderbrush = PIKA_VIEW_RENDERER_BRUSH (data);
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PikaViewRenderer *renderer = PIKA_VIEW_RENDERER (data);
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PikaBrushPipe *brush_pipe;
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PikaBrush *brush;
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PikaTempBuf *temp_buf;
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gint temp_buf_x = 0;
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gint temp_buf_y = 0;
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gint temp_buf_width;
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gint temp_buf_height;
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if (! renderer->viewable)
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{
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renderbrush->pipe_timeout_id = 0;
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renderbrush->pipe_animation_index = 0;
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return FALSE;
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}
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brush_pipe = PIKA_BRUSH_PIPE (renderer->viewable);
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renderbrush->pipe_animation_index++;
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if (renderbrush->pipe_animation_index >= brush_pipe->n_brushes)
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renderbrush->pipe_animation_index = 0;
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brush =
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PIKA_BRUSH (brush_pipe->brushes[renderbrush->pipe_animation_index]);
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temp_buf = pika_viewable_get_new_preview (PIKA_VIEWABLE (brush),
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renderer->context,
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renderer->width,
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renderer->height);
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temp_buf_width = pika_temp_buf_get_width (temp_buf);
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temp_buf_height = pika_temp_buf_get_height (temp_buf);
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if (temp_buf_width < renderer->width)
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temp_buf_x = (renderer->width - temp_buf_width) / 2;
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if (temp_buf_height < renderer->height)
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temp_buf_y = (renderer->height - temp_buf_height) / 2;
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pika_view_renderer_render_temp_buf (renderer, renderbrush->widget, temp_buf,
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temp_buf_x, temp_buf_y,
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-1,
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PIKA_VIEW_BG_WHITE,
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PIKA_VIEW_BG_WHITE);
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pika_temp_buf_unref (temp_buf);
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pika_view_renderer_update (renderer);
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return TRUE;
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}
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static void
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pika_view_renderer_brush_draw (PikaViewRenderer *renderer,
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GtkWidget *widget,
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cairo_t *cr,
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gint available_width,
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gint available_height)
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{
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PIKA_VIEW_RENDERER_CLASS (parent_class)->draw (renderer, widget, cr,
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available_width,
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available_height);
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#define INDICATOR_WIDTH 7
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#define INDICATOR_HEIGHT 7
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if (renderer->width > 2 * INDICATOR_WIDTH &&
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renderer->height > 2 * INDICATOR_HEIGHT)
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{
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gboolean pipe = PIKA_IS_BRUSH_PIPE (renderer->viewable);
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gboolean generated = PIKA_IS_BRUSH_GENERATED (renderer->viewable);
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gint brush_width;
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gint brush_height;
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if (generated || pipe)
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{
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cairo_move_to (cr, available_width, available_height);
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cairo_rel_line_to (cr, - INDICATOR_WIDTH, 0);
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cairo_rel_line_to (cr, INDICATOR_WIDTH, - INDICATOR_HEIGHT);
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cairo_rel_line_to (cr, 0, INDICATOR_HEIGHT);
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if (pipe)
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cairo_set_source_rgb (cr, 1.0, 0.5, 0.5);
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else
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cairo_set_source_rgb (cr, 0.5, 0.6, 1.0);
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cairo_fill (cr);
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}
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pika_viewable_get_size (renderer->viewable, &brush_width, &brush_height);
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if (renderer->width < brush_width || renderer->height < brush_height)
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{
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cairo_move_to (cr,
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available_width - INDICATOR_WIDTH + 1,
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available_height - INDICATOR_HEIGHT / 2.0);
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cairo_rel_line_to (cr, INDICATOR_WIDTH - 2, 0);
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cairo_move_to (cr,
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available_width - INDICATOR_WIDTH / 2.0,
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available_height - INDICATOR_HEIGHT + 1);
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cairo_rel_line_to (cr, 0, INDICATOR_WIDTH - 2);
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cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
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cairo_set_line_width (cr, 1);
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cairo_stroke (cr);
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}
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}
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#undef INDICATOR_WIDTH
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#undef INDICATOR_HEIGHT
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}
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