gtk/tests/testinput.c
Owen Taylor caf8ebc6f1 Reference count the fonts used in the text widget.
Mon Aug 24 18:37:15 1998  Owen Taylor  <otaylor@redhat.com>

	* gtk/gtktext.c: Reference count the fonts used in
	the text widget.

	* gdk/gdk.h gdk/gdkcolor.c: Rename the color allocation
	freeing functions to be more consistent, and more
	convenient; leave the old names in for backwards compatibility.

	* gdk/gdkcolor.c gdk/gdkprivate.h: Reference count the
	allocations in pseudo-color colormaps to greatly reduce
	calls to XAllocColor. Keep a per-colormap hashtable to
	speed up finding if there is an already-allocated matching
	color.

	* gdk/gdkcolor.c: Don't just match read the system colormap
	when the colormap is created, but synchronize our copy
	with the system colormap periodically.

	* gdk/gdk.c gdk/gdktypes.h gtk/gtkentry.c gtk/gtktext.c:
	Change XIM constants names to match GDK conventions

	* gtk/testinput.c: Allow the drawing area to get the focus.

	* gtk/testgtk.c: Change around the Text test to demonstrates
	multiple fonts, use more colors.

	* gtk/gtkwidget.c: Improve gtk_widget_get_colormap()/visual()
	so they work after a widget is unrealized.

	* gtk/gtktext.[ch]: Remove the requirement that the text
	widget be realized before adding text (!) Allocate colors
	ourself, instead of requiring the caller allocate them.
	Allow changing styles to work properly by keeping track
	of the values for a certain property are default or
	set explicitely.

	* gtk/gtkmenu.h: Added some comments.

	* gtk/gtkentry.c: Changes to match XIM constants.

	* gtk/gdk.h gdk/gdkwindow.c: Add gdk_drawable_set_data(),
	for adding keyed data to drawables. (Uses g_dataset
	internally)

	* gdk/gdkpixmap.c: Keep track of the colors we allocate,
	when creating an XPM - store them as user data for the GdkPixmap,
	so we don't leak colors when we create pixmaps from XPM's.

	Allocate memory for color information in large blocks instead of
	as many little pieces.
1998-08-25 00:06:38 +00:00

397 lines
9.9 KiB
C

/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
#include "gtk.h"
/* Backing pixmap for drawing area */
static GdkPixmap *pixmap = NULL;
/* Information about cursor */
static gint need_cursor = FALSE;
static gint cursor_proximity = TRUE;
static gdouble cursor_x;
static gdouble cursor_y;
/* Unique ID of current device */
static guint32 current_device = GDK_CORE_POINTER;
/* Check to see if we need to draw a cursor for current device */
static void
check_cursor (void)
{
GList *tmp_list;
/* gdk_input_list_devices returns an internal list, so we shouldn't
free it afterwards */
tmp_list = gdk_input_list_devices();
while (tmp_list)
{
GdkDeviceInfo *info = (GdkDeviceInfo *)tmp_list->data;
if (info->deviceid == current_device)
{
need_cursor = !info->has_cursor;
break;
}
tmp_list = tmp_list->next;
}
}
/* Erase the old cursor, and/or draw a new one, if necessary */
static void
update_cursor (GtkWidget *widget, gdouble x, gdouble y)
{
static gint cursor_present = 0;
gint state = need_cursor && cursor_proximity;
if (pixmap != NULL)
{
if (cursor_present && (cursor_present != state ||
x != cursor_x || y != cursor_y))
{
gdk_draw_pixmap(widget->window,
widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
pixmap,
cursor_x - 5, cursor_y - 5,
cursor_x - 5, cursor_y - 5,
10, 10);
}
cursor_present = state;
cursor_x = x;
cursor_y = y;
if (cursor_present)
{
gdk_draw_rectangle (widget->window,
widget->style->black_gc,
TRUE,
cursor_x - 5, cursor_y -5,
10, 10);
}
}
}
/* Create a new backing pixmap of the appropriate size */
static gint
configure_event (GtkWidget *widget, GdkEventConfigure *event)
{
if (pixmap)
gdk_pixmap_unref (pixmap);
pixmap = gdk_pixmap_new(widget->window,
widget->allocation.width,
widget->allocation.height,
-1);
gdk_draw_rectangle (pixmap,
widget->style->white_gc,
TRUE,
0, 0,
widget->allocation.width,
widget->allocation.height);
return TRUE;
}
/* Refill the screen from the backing pixmap */
static gint
expose_event (GtkWidget *widget, GdkEventExpose *event)
{
gdk_draw_pixmap(widget->window,
widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
pixmap,
event->area.x, event->area.y,
event->area.x, event->area.y,
event->area.width, event->area.height);
return FALSE;
}
/* Draw a rectangle on the screen, size depending on pressure,
and color on the type of device */
static void
draw_brush (GtkWidget *widget, GdkInputSource source,
gdouble x, gdouble y, gdouble pressure)
{
GdkGC *gc;
GdkRectangle update_rect;
switch (source)
{
case GDK_SOURCE_MOUSE:
gc = widget->style->dark_gc[GTK_WIDGET_STATE (widget)];
break;
case GDK_SOURCE_PEN:
gc = widget->style->black_gc;
break;
case GDK_SOURCE_ERASER:
gc = widget->style->white_gc;
break;
default:
gc = widget->style->light_gc[GTK_WIDGET_STATE (widget)];
}
update_rect.x = x - 10 * pressure;
update_rect.y = y - 10 * pressure;
update_rect.width = 20 * pressure;
update_rect.height = 20 * pressure;
gdk_draw_rectangle (pixmap, gc, TRUE,
update_rect.x, update_rect.y,
update_rect.width, update_rect.height);
gtk_widget_draw (widget, &update_rect);
}
static guint32 motion_time;
static gint
button_press_event (GtkWidget *widget, GdkEventButton *event)
{
if (event->deviceid != current_device)
{
current_device = event->deviceid;
check_cursor ();
}
cursor_proximity = TRUE;
if (event->button == 1 && pixmap != NULL)
{
draw_brush (widget, event->source, event->x, event->y,
event->pressure);
motion_time = event->time;
}
update_cursor (widget, event->x, event->y);
return TRUE;
}
static gint
key_press_event (GtkWidget *widget, GdkEventKey *event)
{
if ((event->keyval >= 0x20) && (event->keyval <= 0xFF))
printf("I got a %c\n", event->keyval);
else
printf("I got some other key\n");
return TRUE;
}
static gint
motion_notify_event (GtkWidget *widget, GdkEventMotion *event)
{
GdkTimeCoord *coords;
int nevents;
int i;
if (event->deviceid != current_device)
{
current_device = event->deviceid;
check_cursor ();
}
cursor_proximity = TRUE;
if (event->state & GDK_BUTTON1_MASK && pixmap != NULL)
{
coords = gdk_input_motion_events (event->window, event->deviceid,
motion_time, event->time,
&nevents);
motion_time = event->time;
if (coords)
{
for (i=0; i<nevents; i++)
draw_brush (widget, event->source, coords[i].x, coords[i].y,
coords[i].pressure);
g_free (coords);
}
else
{
if (event->is_hint)
gdk_input_window_get_pointer (event->window, event->deviceid,
NULL, NULL, NULL, NULL, NULL, NULL);
draw_brush (widget, event->source, event->x, event->y,
event->pressure);
}
}
else
{
gdk_input_window_get_pointer (event->window, event->deviceid,
&event->x, &event->y,
NULL, NULL, NULL, NULL);
}
update_cursor (widget, event->x, event->y);
return TRUE;
}
/* We track the next two events to know when we need to draw a
cursor */
static gint
proximity_out_event (GtkWidget *widget, GdkEventProximity *event)
{
cursor_proximity = FALSE;
update_cursor (widget, cursor_x, cursor_y);
return TRUE;
}
static gint
leave_notify_event (GtkWidget *widget, GdkEventCrossing *event)
{
cursor_proximity = FALSE;
update_cursor (widget, cursor_x, cursor_y);
return TRUE;
}
void
input_dialog_destroy (GtkWidget *w, gpointer data)
{
*((GtkWidget **)data) = NULL;
}
void
create_input_dialog (void)
{
static GtkWidget *inputd = NULL;
if (!inputd)
{
inputd = gtk_input_dialog_new();
gtk_signal_connect (GTK_OBJECT(inputd), "destroy",
(GtkSignalFunc)input_dialog_destroy, &inputd);
gtk_signal_connect_object (GTK_OBJECT(GTK_INPUT_DIALOG(inputd)->close_button),
"clicked",
(GtkSignalFunc)gtk_widget_hide,
GTK_OBJECT(inputd));
gtk_widget_hide ( GTK_INPUT_DIALOG(inputd)->save_button);
gtk_signal_connect (GTK_OBJECT(inputd), "enable_device",
(GtkSignalFunc)check_cursor, NULL);
gtk_widget_show (inputd);
}
else
{
if (!GTK_WIDGET_MAPPED(inputd))
gtk_widget_show(inputd);
else
gdk_window_raise(inputd->window);
}
}
void
quit (void)
{
gtk_exit (0);
}
int
main (int argc, char *argv[])
{
GtkWidget *window;
GtkWidget *drawing_area;
GtkWidget *vbox;
GtkWidget *button;
gtk_init (&argc, &argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_widget_set_name (window, "Test Input");
vbox = gtk_vbox_new (FALSE, 0);
gtk_container_add (GTK_CONTAINER (window), vbox);
gtk_widget_show (vbox);
gtk_signal_connect (GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC (quit), NULL);
/* Create the drawing area */
drawing_area = gtk_drawing_area_new ();
gtk_drawing_area_size (GTK_DRAWING_AREA (drawing_area), 200, 200);
gtk_box_pack_start (GTK_BOX (vbox), drawing_area, TRUE, TRUE, 0);
gtk_widget_show (drawing_area);
/* Signals used to handle backing pixmap */
gtk_signal_connect (GTK_OBJECT (drawing_area), "expose_event",
(GtkSignalFunc) expose_event, NULL);
gtk_signal_connect (GTK_OBJECT(drawing_area),"configure_event",
(GtkSignalFunc) configure_event, NULL);
/* Event signals */
gtk_signal_connect (GTK_OBJECT (drawing_area), "motion_notify_event",
(GtkSignalFunc) motion_notify_event, NULL);
gtk_signal_connect (GTK_OBJECT (drawing_area), "button_press_event",
(GtkSignalFunc) button_press_event, NULL);
gtk_signal_connect (GTK_OBJECT (drawing_area), "key_press_event",
(GtkSignalFunc) key_press_event, NULL);
gtk_signal_connect (GTK_OBJECT (drawing_area), "leave_notify_event",
(GtkSignalFunc) leave_notify_event, NULL);
gtk_signal_connect (GTK_OBJECT (drawing_area), "proximity_out_event",
(GtkSignalFunc) proximity_out_event, NULL);
gtk_widget_set_events (drawing_area, GDK_EXPOSURE_MASK
| GDK_LEAVE_NOTIFY_MASK
| GDK_BUTTON_PRESS_MASK
| GDK_KEY_PRESS_MASK
| GDK_POINTER_MOTION_MASK
| GDK_POINTER_MOTION_HINT_MASK
| GDK_PROXIMITY_OUT_MASK);
/* The following call enables tracking and processing of extension
events for the drawing area */
gtk_widget_set_extension_events (drawing_area, GDK_EXTENSION_EVENTS_ALL);
GTK_WIDGET_SET_FLAGS (drawing_area, GTK_CAN_FOCUS);
gtk_widget_grab_focus (drawing_area);
/* .. And create some buttons */
button = gtk_button_new_with_label ("Input Dialog");
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (button), "clicked",
GTK_SIGNAL_FUNC (create_input_dialog), NULL);
gtk_widget_show (button);
button = gtk_button_new_with_label ("Quit");
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
GTK_SIGNAL_FUNC (gtk_widget_destroy),
GTK_OBJECT (window));
gtk_widget_show (button);
gtk_widget_show (window);
gtk_main ();
return 0;
}