+++ /dev/null
-/*
- * wdgt-chain-button.c
- * Modified version of gimpchainbutton.h for gLabels:
- *
- * LIBGIMP - The GIMP Library
- * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
- *
- * gimpchainbutton.h
- * Copyright (C) 1999-2000 Sven Neumann <sven@gimp.org>
- *
- * Modified or gLabels by Jim Evins <evins@snaught.com>
- *
- *
- * This file is part of gLabels.
- *
- * gLabels 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.
- *
- * gLabels 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 gLabels. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "wdgt-chain-button.h"
-
-#include <gtk/gtk.h>
-
-#include "stock.h"
-
-
-enum
-{
- TOGGLED,
- LAST_SIGNAL
-};
-
-
-static void gl_wdgt_chain_button_clicked_callback (GtkWidget *widget,
- glWdgtChainButton *button);
-static gboolean gl_wdgt_chain_button_draw_lines (GtkWidget *widget,
- GdkEventExpose *eevent,
- glWdgtChainButton *button);
-
-
-static const gchar *gl_wdgt_chain_stock_items[] =
-{
- GL_STOCK_HCHAIN,
- GL_STOCK_HCHAIN_BROKEN,
- GL_STOCK_VCHAIN,
- GL_STOCK_VCHAIN_BROKEN
-};
-
-
-static guint gl_wdgt_chain_button_signals[LAST_SIGNAL] = { 0 };
-
-
-
-G_DEFINE_TYPE (glWdgtChainButton, gl_wdgt_chain_button, GTK_TYPE_TABLE);
-
-
-static void
-gl_wdgt_chain_button_class_init (glWdgtChainButtonClass *class)
-{
- gl_wdgt_chain_button_parent_class = g_type_class_peek_parent (class);
-
- gl_wdgt_chain_button_signals[TOGGLED] =
- g_signal_new ("toggled",
- G_TYPE_FROM_CLASS (class),
- G_SIGNAL_RUN_FIRST,
- G_STRUCT_OFFSET (glWdgtChainButtonClass, toggled),
- NULL, NULL,
- g_cclosure_marshal_VOID__VOID,
- G_TYPE_NONE, 0);
-
- class->toggled = NULL;
-}
-
-static void
-gl_wdgt_chain_button_init (glWdgtChainButton *button)
-{
- button->position = GL_WDGT_CHAIN_TOP;
- button->active = FALSE;
-
- button->line1 = gtk_drawing_area_new ();
- button->line2 = gtk_drawing_area_new ();
- button->image = gtk_image_new ();
-
- button->button = gtk_button_new ();
-
- gtk_button_set_relief (GTK_BUTTON (button->button), GTK_RELIEF_NONE);
- gtk_container_add (GTK_CONTAINER (button->button), button->image);
- gtk_widget_show (button->image);
-
- g_signal_connect (button->button, "clicked",
- G_CALLBACK (gl_wdgt_chain_button_clicked_callback),
- button);
- g_signal_connect (button->line1, "expose_event",
- G_CALLBACK (gl_wdgt_chain_button_draw_lines),
- button);
- g_signal_connect (button->line2, "expose_event",
- G_CALLBACK (gl_wdgt_chain_button_draw_lines),
- button);
-}
-
-
-/**
- * gl_wdgt_chain_button_new:
- * @position: The position you are going to use for the button
- * with respect to the widgets you want to chain.
- *
- * Creates a new #glWdgtChainButton widget.
- *
- * This returns a button showing either a broken or a linked chain and
- * small clamps attached to both sides that visually group the two widgets
- * you want to connect. This widget looks best when attached
- * to a table taking up two columns (or rows respectively) next
- * to the widgets that it is supposed to connect. It may work
- * for more than two widgets, but the look is optimized for two.
- *
- * Returns: Pointer to the new #glWdgtChainButton, which is inactive
- * by default. Use gl_wdgt_chain_button_set_active() to
- * change its state.
- */
-GtkWidget *
-gl_wdgt_chain_button_new (glWdgtChainPosition position)
-{
- glWdgtChainButton *button;
-
- button = g_object_new (GL_WDGT_TYPE_CHAIN_BUTTON, NULL);
-
- button->position = position;
-
- gtk_image_set_from_stock
- (GTK_IMAGE (button->image),
- gl_wdgt_chain_stock_items[((position & GL_WDGT_CHAIN_LEFT) << 1) + ! button->active],
- GTK_ICON_SIZE_BUTTON);
-
- if (position & GL_WDGT_CHAIN_LEFT) /* are we a vertical chainbutton? */
- {
- gtk_table_resize (GTK_TABLE (button), 3, 1);
- gtk_table_attach (GTK_TABLE (button), button->button, 0, 1, 1, 2,
- GTK_SHRINK, GTK_SHRINK, 0, 0);
- gtk_table_attach_defaults (GTK_TABLE (button),
- button->line1, 0, 1, 0, 1);
- gtk_table_attach_defaults (GTK_TABLE (button),
- button->line2, 0, 1, 2, 3);
- }
- else
- {
- gtk_table_resize (GTK_TABLE (button), 1, 3);
- gtk_table_attach (GTK_TABLE (button), button->button, 1, 2, 0, 1,
- GTK_SHRINK, GTK_SHRINK, 0, 0);
- gtk_table_attach_defaults (GTK_TABLE (button),
- button->line1, 0, 1, 0, 1);
- gtk_table_attach_defaults (GTK_TABLE (button),
- button->line2, 2, 3, 0, 1);
- }
-
- gtk_widget_show (button->button);
- gtk_widget_show (button->line1);
- gtk_widget_show (button->line2);
-
- return GTK_WIDGET (button);
-}
-
-/**
- * gl_wdgt_chain_button_set_active:
- * @button: Pointer to a #glWdgtChainButton.
- * @active: The new state.
- *
- * Sets the state of the #glWdgtChainButton to be either locked (%TRUE) or
- * unlocked (%FALSE) and changes the showed pixmap to reflect the new state.
- */
-void
-gl_wdgt_chain_button_set_active (glWdgtChainButton *button,
- gboolean active)
-{
- g_return_if_fail (GL_WDGT_IS_CHAIN_BUTTON (button));
-
- if (button->active != active)
- {
- guint num;
-
- button->active = active ? TRUE : FALSE;
-
- num = ((button->position & GL_WDGT_CHAIN_LEFT) << 1) + (active ? 0 : 1);
-
- gtk_image_set_from_stock (GTK_IMAGE (button->image),
- gl_wdgt_chain_stock_items[num],
- GTK_ICON_SIZE_BUTTON);
- }
-}
-
-/**
- * gl_wdgt_chain_button_get_active
- * @button: Pointer to a #glWdgtChainButton.
- *
- * Checks the state of the #glWdgtChainButton.
- *
- * Returns: %TRUE if the #glWdgtChainButton is active (locked).
- */
-gboolean
-gl_wdgt_chain_button_get_active (glWdgtChainButton *button)
-{
- g_return_val_if_fail (GL_WDGT_IS_CHAIN_BUTTON (button), FALSE);
-
- return button->active;
-}
-
-static void
-gl_wdgt_chain_button_clicked_callback (GtkWidget *widget,
- glWdgtChainButton *button)
-{
- g_return_if_fail (GL_WDGT_IS_CHAIN_BUTTON (button));
-
- gl_wdgt_chain_button_set_active (button, ! button->active);
-
- g_signal_emit (button, gl_wdgt_chain_button_signals[TOGGLED], 0);
-}
-
-static gboolean
-gl_wdgt_chain_button_draw_lines (GtkWidget *widget,
- GdkEventExpose *eevent,
- glWdgtChainButton *button)
-{
- GdkPoint points[3];
- GdkPoint buf;
- GtkShadowType shadow;
- glWdgtChainPosition position;
- gint which_line;
-
-#define SHORT_LINE 4
- /* don't set this too high, there's no check against drawing outside
- the widgets bounds yet (and probably never will be) */
-
- g_return_val_if_fail (GL_WDGT_IS_CHAIN_BUTTON (button), FALSE);
-
- points[0].x = widget->allocation.width / 2;
- points[0].y = widget->allocation.height / 2;
-
- which_line = (widget == button->line1) ? 1 : -1;
-
- position = button->position;
-
- if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
- switch (position)
- {
- case GL_WDGT_CHAIN_LEFT:
- position = GL_WDGT_CHAIN_RIGHT;
- break;
- case GL_WDGT_CHAIN_RIGHT:
- position = GL_WDGT_CHAIN_LEFT;
- break;
- default:
- break;
- }
-
- switch (position)
- {
- case GL_WDGT_CHAIN_LEFT:
- points[0].x += SHORT_LINE;
- points[1].x = points[0].x - SHORT_LINE;
- points[1].y = points[0].y;
- points[2].x = points[1].x;
- points[2].y = (which_line == 1) ? widget->allocation.height - 1 : 0;
- shadow = GTK_SHADOW_ETCHED_IN;
- break;
- case GL_WDGT_CHAIN_RIGHT:
- points[0].x -= SHORT_LINE;
- points[1].x = points[0].x + SHORT_LINE;
- points[1].y = points[0].y;
- points[2].x = points[1].x;
- points[2].y = (which_line == 1) ? widget->allocation.height - 1 : 0;
- shadow = GTK_SHADOW_ETCHED_OUT;
- break;
- case GL_WDGT_CHAIN_TOP:
- points[0].y += SHORT_LINE;
- points[1].x = points[0].x;
- points[1].y = points[0].y - SHORT_LINE;
- points[2].x = (which_line == 1) ? widget->allocation.width - 1 : 0;
- points[2].y = points[1].y;
- shadow = GTK_SHADOW_ETCHED_OUT;
- break;
- case GL_WDGT_CHAIN_BOTTOM:
- points[0].y -= SHORT_LINE;
- points[1].x = points[0].x;
- points[1].y = points[0].y + SHORT_LINE;
- points[2].x = (which_line == 1) ? widget->allocation.width - 1 : 0;
- points[2].y = points[1].y;
- shadow = GTK_SHADOW_ETCHED_IN;
- break;
- default:
- return FALSE;
- }
-
- if ( ((shadow == GTK_SHADOW_ETCHED_OUT) && (which_line == -1)) ||
- ((shadow == GTK_SHADOW_ETCHED_IN) && (which_line == 1)) )
- {
- buf = points[0];
- points[0] = points[2];
- points[2] = buf;
- }
-
- gtk_paint_polygon (widget->style,
- widget->window,
- GTK_STATE_NORMAL,
- shadow,
- &eevent->area,
- widget,
- "chainbutton",
- points,
- 3,
- FALSE);
-
- return TRUE;
-}
-
-
-
-/*
- * Local Variables: -- emacs
- * mode: C -- emacs
- * c-basic-offset: 8 -- emacs
- * tab-width: 8 -- emacs
- * indent-tabs-mode: nil -- emacs
- * End: -- emacs
- */
projects / glabels / blobdiff