415 lines
14 KiB
C
415 lines
14 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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* pikacellrendererviewable.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 "libpikabase/pikabase.h"
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#include "core/pikamarshal.h"
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#include "core/pikaviewable.h"
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#include "pikacellrendererviewable.h"
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#include "pikaview-popup.h"
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#include "pikaviewrenderer.h"
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enum
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{
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PRE_CLICKED,
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CLICKED,
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LAST_SIGNAL
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};
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enum
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{
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PROP_0,
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PROP_RENDERER
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};
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static void pika_cell_renderer_viewable_finalize (GObject *object);
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static void pika_cell_renderer_viewable_get_property (GObject *object,
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guint param_id,
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GValue *value,
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GParamSpec *pspec);
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static void pika_cell_renderer_viewable_set_property (GObject *object,
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guint param_id,
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const GValue *value,
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GParamSpec *pspec);
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static void pika_cell_renderer_viewable_get_size (GtkCellRenderer *cell,
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GtkWidget *widget,
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const GdkRectangle *rectangle,
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gint *x_offset,
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gint *y_offset,
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gint *width,
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gint *height);
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static void pika_cell_renderer_viewable_render (GtkCellRenderer *cell,
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cairo_t *cr,
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GtkWidget *widget,
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const GdkRectangle *background_area,
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const GdkRectangle *cell_area,
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GtkCellRendererState flags);
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static gboolean pika_cell_renderer_viewable_activate (GtkCellRenderer *cell,
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GdkEvent *event,
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GtkWidget *widget,
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const gchar *path,
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const GdkRectangle *background_area,
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const GdkRectangle *cell_area,
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GtkCellRendererState flags);
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G_DEFINE_TYPE (PikaCellRendererViewable, pika_cell_renderer_viewable,
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GTK_TYPE_CELL_RENDERER)
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#define parent_class pika_cell_renderer_viewable_parent_class
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static guint viewable_cell_signals[LAST_SIGNAL] = { 0 };
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static void
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pika_cell_renderer_viewable_class_init (PikaCellRendererViewableClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS (klass);
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/**
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* PikaCellRendererViewable::pre-clicked:
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* @cell:
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* @path:
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* @state:
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*
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* Called early on a viewable cell when it is clicked, typically
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* before selection code is invoked for example.
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*
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* Returns: %TRUE if the signal handled the event and event
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* propagation should stop, for example preventing a
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* selection from happening, %FALSE to continue as normal
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**/
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viewable_cell_signals[PRE_CLICKED] =
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g_signal_new ("pre-clicked",
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G_OBJECT_CLASS_TYPE (object_class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (PikaCellRendererViewableClass, pre_clicked),
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g_signal_accumulator_true_handled, NULL,
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pika_marshal_BOOLEAN__STRING_FLAGS,
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G_TYPE_BOOLEAN, 2,
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G_TYPE_STRING,
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GDK_TYPE_MODIFIER_TYPE);
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/**
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* PikaCellRendererViewable::clicked:
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* @cell:
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* @path:
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* @state:
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*
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* Called late on a viewable cell when it is clicked, typically
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* after selection code has been invoked for example.
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**/
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viewable_cell_signals[CLICKED] =
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g_signal_new ("clicked",
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G_OBJECT_CLASS_TYPE (object_class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (PikaCellRendererViewableClass, clicked),
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NULL, NULL,
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pika_marshal_VOID__STRING_FLAGS,
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G_TYPE_NONE, 2,
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G_TYPE_STRING,
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GDK_TYPE_MODIFIER_TYPE);
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object_class->finalize = pika_cell_renderer_viewable_finalize;
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object_class->get_property = pika_cell_renderer_viewable_get_property;
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object_class->set_property = pika_cell_renderer_viewable_set_property;
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cell_class->get_size = pika_cell_renderer_viewable_get_size;
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cell_class->render = pika_cell_renderer_viewable_render;
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cell_class->activate = pika_cell_renderer_viewable_activate;
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klass->clicked = NULL;
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g_object_class_install_property (object_class, PROP_RENDERER,
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g_param_spec_object ("renderer",
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NULL, NULL,
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PIKA_TYPE_VIEW_RENDERER,
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PIKA_PARAM_READWRITE));
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}
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static void
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pika_cell_renderer_viewable_init (PikaCellRendererViewable *cellviewable)
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{
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g_object_set (cellviewable,
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"mode", GTK_CELL_RENDERER_MODE_ACTIVATABLE,
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NULL);
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}
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static void
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pika_cell_renderer_viewable_finalize (GObject *object)
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{
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PikaCellRendererViewable *cell = PIKA_CELL_RENDERER_VIEWABLE (object);
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g_clear_object (&cell->renderer);
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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_cell_renderer_viewable_get_property (GObject *object,
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guint param_id,
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GValue *value,
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GParamSpec *pspec)
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{
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PikaCellRendererViewable *cell = PIKA_CELL_RENDERER_VIEWABLE (object);
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switch (param_id)
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{
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case PROP_RENDERER:
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g_value_set_object (value, cell->renderer);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
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break;
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}
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}
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static void
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pika_cell_renderer_viewable_set_property (GObject *object,
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guint param_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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PikaCellRendererViewable *cell = PIKA_CELL_RENDERER_VIEWABLE (object);
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switch (param_id)
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{
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case PROP_RENDERER:
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{
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PikaViewRenderer *renderer = g_value_dup_object (value);
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if (cell->renderer)
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g_object_unref (cell->renderer);
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cell->renderer = renderer;
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}
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
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break;
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}
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}
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static void
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pika_cell_renderer_viewable_get_size (GtkCellRenderer *cell,
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GtkWidget *widget,
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const GdkRectangle *cell_area,
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gint *x_offset,
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gint *y_offset,
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gint *width,
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gint *height)
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{
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PikaCellRendererViewable *cellviewable;
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gfloat xalign, yalign;
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gint xpad, ypad;
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gint view_width = 0;
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gint view_height = 0;
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gint calc_width;
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gint calc_height;
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gtk_cell_renderer_get_alignment (cell, &xalign, &yalign);
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gtk_cell_renderer_get_padding (cell, &xpad, &ypad);
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cellviewable = PIKA_CELL_RENDERER_VIEWABLE (cell);
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if (cellviewable->renderer)
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{
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view_width = (cellviewable->renderer->width +
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2 * cellviewable->renderer->border_width);
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view_height = (cellviewable->renderer->height +
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2 * cellviewable->renderer->border_width);
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}
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calc_width = (gint) xpad * 2 + view_width;
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calc_height = (gint) ypad * 2 + view_height;
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if (x_offset) *x_offset = 0;
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if (y_offset) *y_offset = 0;
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if (cell_area && view_width > 0 && view_height > 0)
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{
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if (x_offset)
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{
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*x_offset = (((gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) ?
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1.0 - xalign : xalign) *
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(cell_area->width - calc_width - 2 * xpad));
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*x_offset = (MAX (*x_offset, 0) + xpad);
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}
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if (y_offset)
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{
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*y_offset = (yalign * (cell_area->height - calc_height - 2 * ypad));
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*y_offset = (MAX (*y_offset, 0) + ypad);
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}
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}
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if (width) *width = calc_width;
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if (height) *height = calc_height;
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}
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static void
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pika_cell_renderer_viewable_render (GtkCellRenderer *cell,
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cairo_t *cr,
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GtkWidget *widget,
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const GdkRectangle *background_area,
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const GdkRectangle *cell_area,
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GtkCellRendererState flags)
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{
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PikaCellRendererViewable *cellviewable;
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cellviewable = PIKA_CELL_RENDERER_VIEWABLE (cell);
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if (cellviewable->renderer)
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{
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if (! (flags & GTK_CELL_RENDERER_SELECTED))
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{
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/* this is an ugly hack. The cell state should be passed to
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* the view renderer, so that it can adjust its border.
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* (or something like this) */
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if (cellviewable->renderer->border_type == PIKA_VIEW_BORDER_WHITE)
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pika_view_renderer_set_border_type (cellviewable->renderer,
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PIKA_VIEW_BORDER_BLACK);
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pika_view_renderer_remove_idle (cellviewable->renderer);
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}
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cairo_translate (cr, cell_area->x, cell_area->y);
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pika_view_renderer_draw (cellviewable->renderer, widget, cr,
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cell_area->width,
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cell_area->height);
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}
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}
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static gboolean
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pika_cell_renderer_viewable_activate (GtkCellRenderer *cell,
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GdkEvent *event,
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GtkWidget *widget,
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const gchar *path,
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const GdkRectangle *background_area,
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const GdkRectangle *cell_area,
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GtkCellRendererState flags)
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{
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PikaCellRendererViewable *cellviewable;
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cellviewable = PIKA_CELL_RENDERER_VIEWABLE (cell);
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if (cellviewable->renderer)
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{
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GdkModifierType state = 0;
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if (event && ((GdkEventAny *) event)->type == GDK_BUTTON_PRESS)
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state = ((GdkEventButton *) event)->state;
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if (! event ||
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(((GdkEventAny *) event)->type == GDK_BUTTON_PRESS &&
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((GdkEventButton *) event)->button == 1))
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{
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pika_cell_renderer_viewable_clicked (cellviewable, path, state);
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return TRUE;
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}
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}
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return FALSE;
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}
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GtkCellRenderer *
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pika_cell_renderer_viewable_new (void)
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{
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return g_object_new (PIKA_TYPE_CELL_RENDERER_VIEWABLE, NULL);
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}
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gboolean
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pika_cell_renderer_viewable_pre_clicked (PikaCellRendererViewable *cell,
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const gchar *path,
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GdkModifierType state)
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{
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gboolean handled = FALSE;
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g_return_val_if_fail (PIKA_IS_CELL_RENDERER_VIEWABLE (cell), FALSE);
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g_return_val_if_fail (path != NULL, FALSE);
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g_signal_emit (cell,
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viewable_cell_signals[PRE_CLICKED],
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0 /*detail*/,
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path, state,
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&handled);
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return handled;
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}
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void
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pika_cell_renderer_viewable_clicked (PikaCellRendererViewable *cell,
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const gchar *path,
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|
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GdkModifierType state)
|
||
|
|
{
|
||
|
|
|
||
|
|
g_return_if_fail (PIKA_IS_CELL_RENDERER_VIEWABLE (cell));
|
||
|
|
g_return_if_fail (path != NULL);
|
||
|
|
|
||
|
|
if (cell->renderer)
|
||
|
|
{
|
||
|
|
GdkEvent *event = gtk_get_current_event ();
|
||
|
|
|
||
|
|
if (event)
|
||
|
|
{
|
||
|
|
GdkEventButton *bevent = (GdkEventButton *) event;
|
||
|
|
GdkModifierType modifiers = gtk_accelerator_get_default_mod_mask ();
|
||
|
|
|
||
|
|
if (bevent->type == GDK_BUTTON_PRESS &&
|
||
|
|
(bevent->state & modifiers) == 0 &&
|
||
|
|
(bevent->button == 1 || bevent->button == 2))
|
||
|
|
{
|
||
|
|
pika_view_popup_show (gtk_get_event_widget (event),
|
||
|
|
bevent,
|
||
|
|
cell->renderer->context,
|
||
|
|
cell->renderer->viewable,
|
||
|
|
cell->renderer->width,
|
||
|
|
cell->renderer->height,
|
||
|
|
cell->renderer->dot_for_dot);
|
||
|
|
}
|
||
|
|
|
||
|
|
gdk_event_free (event);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* emit the signal last so no callback effects can set
|
||
|
|
* cell->renderer to NULL.
|
||
|
|
*/
|
||
|
|
g_signal_emit (cell, viewable_cell_signals[CLICKED], 0, path, state);
|
||
|
|
}
|
