/* The GIMP -- an image manipulation program * Copyright (C) 1995 Spencer Kimball and Peter Mattis * * gimppreviewrendererimage.c * Copyright (C) 2003 Michael Natterer * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "config.h" #include #include "libgimpwidgets/gimpwidgets.h" #include "widgets-types.h" #include "base/temp-buf.h" #include "core/gimpimage.h" #include "gimppreviewrendererimage.h" static void gimp_preview_renderer_image_class_init (GimpPreviewRendererImageClass *klass); static void gimp_preview_renderer_image_init (GimpPreviewRendererImage *renderer); static void gimp_preview_renderer_image_render (GimpPreviewRenderer *renderer, GtkWidget *widget); static GimpPreviewRendererClass *parent_class = NULL; GType gimp_preview_renderer_image_get_type (void) { static GType renderer_type = 0; if (! renderer_type) { static const GTypeInfo renderer_info = { sizeof (GimpPreviewRendererImageClass), NULL, /* base_init */ NULL, /* base_finalize */ (GClassInitFunc) gimp_preview_renderer_image_class_init, NULL, /* class_finalize */ NULL, /* class_data */ sizeof (GimpPreviewRendererImage), 0, /* n_preallocs */ (GInstanceInitFunc) gimp_preview_renderer_image_init, }; renderer_type = g_type_register_static (GIMP_TYPE_PREVIEW_RENDERER, "GimpPreviewRendererImage", &renderer_info, 0); } return renderer_type; } static void gimp_preview_renderer_image_class_init (GimpPreviewRendererImageClass *klass) { GimpPreviewRendererClass *renderer_class; renderer_class = GIMP_PREVIEW_RENDERER_CLASS (klass); parent_class = g_type_class_peek_parent (klass); renderer_class->render = gimp_preview_renderer_image_render; } static void gimp_preview_renderer_image_init (GimpPreviewRendererImage *renderer) { renderer->channel = -1; } static void gimp_preview_renderer_image_render (GimpPreviewRenderer *renderer, GtkWidget *widget) { GimpPreviewRendererImage *rendererimage; GimpImage *gimage; gint preview_width; gint preview_height; gboolean scaling_up; TempBuf *render_buf = NULL; rendererimage = GIMP_PREVIEW_RENDERER_IMAGE (renderer); gimage = GIMP_IMAGE (renderer->viewable); gimp_viewable_calc_preview_size (renderer->viewable, gimage->width, gimage->height, renderer->width, renderer->height, renderer->dot_for_dot, gimage->xresolution, gimage->yresolution, &preview_width, &preview_height, &scaling_up); if (scaling_up) { TempBuf *temp_buf; temp_buf = gimp_viewable_get_new_preview (renderer->viewable, gimage->width, gimage->height); if (temp_buf) { render_buf = temp_buf_scale (temp_buf, preview_width, preview_height); temp_buf_free (temp_buf); } } else { render_buf = gimp_viewable_get_new_preview (renderer->viewable, preview_width, preview_height); } if (render_buf) { gint component_index = -1; /* xresolution != yresolution */ if (preview_width > renderer->width || preview_height > renderer->height) { TempBuf *temp_buf; temp_buf = temp_buf_scale (render_buf, renderer->width, renderer->height); temp_buf_free (render_buf); render_buf = temp_buf; } if (preview_width < renderer->width) render_buf->x = (renderer->width - preview_width) / 2; if (preview_height < renderer->height) render_buf->y = (renderer->height - preview_height) / 2; if (rendererimage->channel != -1) component_index = gimp_image_get_component_index (gimage, rendererimage->channel); gimp_preview_renderer_render_buffer (renderer, render_buf, component_index, GIMP_PREVIEW_BG_CHECKS, GIMP_PREVIEW_BG_WHITE); temp_buf_free (render_buf); } else { const gchar *stock_id; switch (rendererimage->channel) { case GIMP_RED_CHANNEL: stock_id = GIMP_STOCK_CHANNEL_RED; break; case GIMP_GREEN_CHANNEL: stock_id = GIMP_STOCK_CHANNEL_GREEN; break; case GIMP_BLUE_CHANNEL: stock_id = GIMP_STOCK_CHANNEL_BLUE; break; case GIMP_GRAY_CHANNEL: stock_id = GIMP_STOCK_CHANNEL_GRAY; break; case GIMP_INDEXED_CHANNEL: stock_id = GIMP_STOCK_QUESTION; break; case GIMP_ALPHA_CHANNEL: stock_id = GIMP_STOCK_CHANNEL_ALPHA; break; default: stock_id = gimp_viewable_get_stock_id (renderer->viewable); break; } gimp_preview_renderer_default_render_stock (renderer, widget, stock_id); } }