371 lines
12 KiB
C
371 lines
12 KiB
C
|
/* PIKA - Photo and Image Kooker Application
|
||
|
|
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
|
||
|
|
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
|
||
|
|
*
|
||
|
|
* Original copyright, applying to most contents (license remains unchanged):
|
||
|
|
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
|
||
|
|
*
|
||
|
|
* pikaviewrendererdrawable.c
|
||
|
|
* Copyright (C) 2003 Michael Natterer <mitch@gimp.org>
|
||
|
|
*
|
||
|
|
* 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 3 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, see <https://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "config.h"
|
||
|
|
|
||
|
|
#include <gegl.h>
|
||
|
|
#include <gtk/gtk.h>
|
||
|
|
|
||
|
|
#include "libpikabase/pikabase.h"
|
||
|
|
#include "libpikamath/pikamath.h"
|
||
|
|
|
||
|
|
#include "widgets-types.h"
|
||
|
|
|
||
|
|
#include "config/pikacoreconfig.h"
|
||
|
|
|
||
|
|
#include "core/pika.h"
|
||
|
|
#include "core/pikaasync.h"
|
||
|
|
#include "core/pikacancelable.h"
|
||
|
|
#include "core/pikadrawable.h"
|
||
|
|
#include "core/pikadrawable-preview.h"
|
||
|
|
#include "core/pikaimage.h"
|
||
|
|
#include "core/pikatempbuf.h"
|
||
|
|
|
||
|
|
#include "pikaviewrendererdrawable.h"
|
||
|
|
|
||
|
|
|
||
|
|
struct _PikaViewRendererDrawablePrivate
|
||
|
|
{
|
||
|
|
PikaAsync *render_async;
|
||
|
|
GtkWidget *render_widget;
|
||
|
|
gint render_buf_x;
|
||
|
|
gint render_buf_y;
|
||
|
|
gboolean render_update;
|
||
|
|
|
||
|
|
gint prev_width;
|
||
|
|
gint prev_height;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* local function prototypes */
|
||
|
|
|
||
|
|
static void pika_view_renderer_drawable_dispose (GObject *object);
|
||
|
|
|
||
|
|
static void pika_view_renderer_drawable_invalidate (PikaViewRenderer *renderer);
|
||
|
|
static void pika_view_renderer_drawable_render (PikaViewRenderer *renderer,
|
||
|
|
GtkWidget *widget);
|
||
|
|
|
||
|
|
static void pika_view_renderer_drawable_cancel_render (PikaViewRendererDrawable *renderdrawable);
|
||
|
|
|
||
|
|
|
||
|
|
G_DEFINE_TYPE_WITH_PRIVATE (PikaViewRendererDrawable,
|
||
|
|
pika_view_renderer_drawable,
|
||
|
|
PIKA_TYPE_VIEW_RENDERER)
|
||
|
|
|
||
|
|
#define parent_class pika_view_renderer_drawable_parent_class
|
||
|
|
|
||
|
|
|
||
|
|
/* private functions */
|
||
|
|
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_view_renderer_drawable_class_init (PikaViewRendererDrawableClass *klass)
|
||
|
|
{
|
||
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
||
|
|
PikaViewRendererClass *renderer_class = PIKA_VIEW_RENDERER_CLASS (klass);
|
||
|
|
|
||
|
|
object_class->dispose = pika_view_renderer_drawable_dispose;
|
||
|
|
|
||
|
|
renderer_class->invalidate = pika_view_renderer_drawable_invalidate;
|
||
|
|
renderer_class->render = pika_view_renderer_drawable_render;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_view_renderer_drawable_init (PikaViewRendererDrawable *renderdrawable)
|
||
|
|
{
|
||
|
|
renderdrawable->priv =
|
||
|
|
pika_view_renderer_drawable_get_instance_private (renderdrawable);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_view_renderer_drawable_dispose (GObject *object)
|
||
|
|
{
|
||
|
|
PikaViewRendererDrawable *renderdrawable = PIKA_VIEW_RENDERER_DRAWABLE (object);
|
||
|
|
|
||
|
|
pika_view_renderer_drawable_cancel_render (renderdrawable);
|
||
|
|
|
||
|
|
G_OBJECT_CLASS (parent_class)->dispose (object);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_view_renderer_drawable_invalidate (PikaViewRenderer *renderer)
|
||
|
|
{
|
||
|
|
PikaViewRendererDrawable *renderdrawable = PIKA_VIEW_RENDERER_DRAWABLE (renderer);
|
||
|
|
|
||
|
|
pika_view_renderer_drawable_cancel_render (renderdrawable);
|
||
|
|
|
||
|
|
PIKA_VIEW_RENDERER_CLASS (parent_class)->invalidate (renderer);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_view_renderer_drawable_render_async_callback (PikaAsync *async,
|
||
|
|
PikaViewRendererDrawable *renderdrawable)
|
||
|
|
{
|
||
|
|
GtkWidget *widget;
|
||
|
|
|
||
|
|
/* rendering was canceled, and the view renderer is potentially dead (see
|
||
|
|
* pika_view_renderer_drawable_cancel_render()). bail.
|
||
|
|
*/
|
||
|
|
if (pika_async_is_canceled (async))
|
||
|
|
return;
|
||
|
|
|
||
|
|
widget = renderdrawable->priv->render_widget;
|
||
|
|
|
||
|
|
renderdrawable->priv->render_async = NULL;
|
||
|
|
renderdrawable->priv->render_widget = NULL;
|
||
|
|
|
||
|
|
if (pika_async_is_finished (async))
|
||
|
|
{
|
||
|
|
PikaViewRenderer *renderer = PIKA_VIEW_RENDERER (renderdrawable);
|
||
|
|
PikaTempBuf *render_buf = pika_async_get_result (async);
|
||
|
|
|
||
|
|
pika_view_renderer_render_temp_buf (
|
||
|
|
renderer,
|
||
|
|
widget,
|
||
|
|
render_buf,
|
||
|
|
renderdrawable->priv->render_buf_x,
|
||
|
|
renderdrawable->priv->render_buf_y,
|
||
|
|
-1,
|
||
|
|
PIKA_VIEW_BG_CHECKS,
|
||
|
|
PIKA_VIEW_BG_CHECKS);
|
||
|
|
|
||
|
|
if (renderdrawable->priv->render_update)
|
||
|
|
pika_view_renderer_update (renderer);
|
||
|
|
}
|
||
|
|
|
||
|
|
g_object_unref (widget);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_view_renderer_drawable_render (PikaViewRenderer *renderer,
|
||
|
|
GtkWidget *widget)
|
||
|
|
{
|
||
|
|
PikaViewRendererDrawable *renderdrawable = PIKA_VIEW_RENDERER_DRAWABLE (renderer);
|
||
|
|
PikaDrawable *drawable;
|
||
|
|
PikaItem *item;
|
||
|
|
PikaImage *image;
|
||
|
|
const gchar *icon_name;
|
||
|
|
PikaAsync *async;
|
||
|
|
gint image_width;
|
||
|
|
gint image_height;
|
||
|
|
gint view_width;
|
||
|
|
gint view_height;
|
||
|
|
gint src_x;
|
||
|
|
gint src_y;
|
||
|
|
gint src_width;
|
||
|
|
gint src_height;
|
||
|
|
gint dst_x;
|
||
|
|
gint dst_y;
|
||
|
|
gint dst_width;
|
||
|
|
gint dst_height;
|
||
|
|
gdouble xres = 1.0;
|
||
|
|
gdouble yres = 1.0;
|
||
|
|
gboolean empty = FALSE;
|
||
|
|
|
||
|
|
/* render is already in progress */
|
||
|
|
if (renderdrawable->priv->render_async)
|
||
|
|
return;
|
||
|
|
|
||
|
|
drawable = PIKA_DRAWABLE (renderer->viewable);
|
||
|
|
item = PIKA_ITEM (drawable);
|
||
|
|
image = pika_item_get_image (item);
|
||
|
|
icon_name = pika_viewable_get_icon_name (renderer->viewable);
|
||
|
|
|
||
|
|
if (image && ! image->pika->config->layer_previews)
|
||
|
|
{
|
||
|
|
renderdrawable->priv->prev_width = 0;
|
||
|
|
renderdrawable->priv->prev_height = 0;
|
||
|
|
|
||
|
|
pika_view_renderer_render_icon (renderer, widget, icon_name);
|
||
|
|
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (image)
|
||
|
|
pika_image_get_resolution (image, &xres, &yres);
|
||
|
|
|
||
|
|
if (renderer->is_popup)
|
||
|
|
image = NULL;
|
||
|
|
|
||
|
|
if (image)
|
||
|
|
{
|
||
|
|
image_width = pika_image_get_width (image);
|
||
|
|
image_height = pika_image_get_height (image);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
image_width = pika_item_get_width (item);
|
||
|
|
image_height = pika_item_get_height (item);
|
||
|
|
}
|
||
|
|
|
||
|
|
pika_viewable_calc_preview_size (image_width,
|
||
|
|
image_height,
|
||
|
|
renderer->width,
|
||
|
|
renderer->height,
|
||
|
|
renderer->dot_for_dot,
|
||
|
|
xres,
|
||
|
|
yres,
|
||
|
|
&view_width,
|
||
|
|
&view_height,
|
||
|
|
NULL);
|
||
|
|
|
||
|
|
src_x = 0;
|
||
|
|
src_y = 0;
|
||
|
|
src_width = pika_item_get_width (item);
|
||
|
|
src_height = pika_item_get_height (item);
|
||
|
|
|
||
|
|
if (image)
|
||
|
|
{
|
||
|
|
gint offset_x;
|
||
|
|
gint offset_y;
|
||
|
|
|
||
|
|
pika_item_get_offset (item, &offset_x, &offset_y);
|
||
|
|
|
||
|
|
if (pika_rectangle_intersect (src_x, src_y,
|
||
|
|
src_width, src_height,
|
||
|
|
-offset_x, -offset_y,
|
||
|
|
image_width, image_height,
|
||
|
|
&src_x, &src_y,
|
||
|
|
&src_width, &src_height))
|
||
|
|
{
|
||
|
|
offset_x += src_x;
|
||
|
|
offset_y += src_y;
|
||
|
|
|
||
|
|
dst_x = ROUND (((gdouble) view_width / image_width) *
|
||
|
|
offset_x);
|
||
|
|
dst_y = ROUND (((gdouble) view_height / image_height) *
|
||
|
|
offset_y);
|
||
|
|
dst_width = ROUND (((gdouble) view_width / image_width) *
|
||
|
|
src_width);
|
||
|
|
dst_height = ROUND (((gdouble) view_height / image_height) *
|
||
|
|
src_height);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
dst_x = 0;
|
||
|
|
dst_y = 0;
|
||
|
|
dst_width = 1;
|
||
|
|
dst_height = 1;
|
||
|
|
|
||
|
|
empty = TRUE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
dst_x = (renderer->width - view_width) / 2;
|
||
|
|
dst_y = (renderer->height - view_height) / 2;
|
||
|
|
dst_width = view_width;
|
||
|
|
dst_height = view_height;
|
||
|
|
}
|
||
|
|
|
||
|
|
dst_width = MAX (dst_width, 1);
|
||
|
|
dst_height = MAX (dst_height, 1);
|
||
|
|
|
||
|
|
if (! empty)
|
||
|
|
{
|
||
|
|
async = pika_drawable_get_sub_preview_async (drawable,
|
||
|
|
src_x, src_y,
|
||
|
|
src_width, src_height,
|
||
|
|
dst_width, dst_height);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
const Babl *format = pika_drawable_get_preview_format (drawable);
|
||
|
|
PikaTempBuf *render_buf;
|
||
|
|
|
||
|
|
async = pika_async_new ();
|
||
|
|
|
||
|
|
render_buf = pika_temp_buf_new (dst_width, dst_height, format);
|
||
|
|
pika_temp_buf_data_clear (render_buf);
|
||
|
|
|
||
|
|
pika_async_finish_full (async,
|
||
|
|
render_buf,
|
||
|
|
(GDestroyNotify) pika_temp_buf_unref);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (async)
|
||
|
|
{
|
||
|
|
renderdrawable->priv->render_async = async;
|
||
|
|
renderdrawable->priv->render_widget = g_object_ref (widget);
|
||
|
|
renderdrawable->priv->render_buf_x = dst_x;
|
||
|
|
renderdrawable->priv->render_buf_y = dst_y;
|
||
|
|
renderdrawable->priv->render_update = FALSE;
|
||
|
|
|
||
|
|
pika_async_add_callback_for_object (
|
||
|
|
async,
|
||
|
|
(PikaAsyncCallback) pika_view_renderer_drawable_render_async_callback,
|
||
|
|
renderdrawable,
|
||
|
|
renderdrawable);
|
||
|
|
|
||
|
|
/* if rendering isn't done yet, update the render-view once it is, and
|
||
|
|
* either keep the old drawable preview for now, or, if size changed (or
|
||
|
|
* there's no old preview,) render an icon in the meantime.
|
||
|
|
*/
|
||
|
|
if (renderdrawable->priv->render_async)
|
||
|
|
{
|
||
|
|
renderdrawable->priv->render_update = TRUE;
|
||
|
|
|
||
|
|
if (renderer->width != renderdrawable->priv->prev_width ||
|
||
|
|
renderer->height != renderdrawable->priv->prev_height)
|
||
|
|
{
|
||
|
|
pika_view_renderer_render_icon (renderer, widget, icon_name);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
renderdrawable->priv->prev_width = renderer->width;
|
||
|
|
renderdrawable->priv->prev_height = renderer->height;
|
||
|
|
|
||
|
|
g_object_unref (async);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
renderdrawable->priv->prev_width = 0;
|
||
|
|
renderdrawable->priv->prev_height = 0;
|
||
|
|
|
||
|
|
pika_view_renderer_render_icon (renderer, widget, icon_name);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_view_renderer_drawable_cancel_render (PikaViewRendererDrawable *renderdrawable)
|
||
|
|
{
|
||
|
|
/* cancel the async render operation (if one is ongoing) without actually
|
||
|
|
* waiting for it. if the actual rendering hasn't started yet, it will be
|
||
|
|
* immediately aborted; otherwise, it can't really be interrupted, so we just
|
||
|
|
* let it go on without blocking the main thread.
|
||
|
|
* pika_drawable_get_sub_preview_async() can continue rendering safely even
|
||
|
|
* after the drawable had died, and our completion callback is prepared to
|
||
|
|
* handle cancellation.
|
||
|
|
*/
|
||
|
|
if (renderdrawable->priv->render_async)
|
||
|
|
{
|
||
|
|
pika_cancelable_cancel (
|
||
|
|
PIKA_CANCELABLE (renderdrawable->priv->render_async));
|
||
|
|
|
||
|
|
renderdrawable->priv->render_async = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
g_clear_object (&renderdrawable->priv->render_widget);
|
||
|
|
}
|
