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gtk2/gtk/gtkmagnifier.c

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Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
2013-12-11 14:42:10 +00:00
/* GTK - The GIMP Toolkit
* Copyright © 2013 Carlos Garnacho <carlosg@gnome.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtk/gtk.h"
#include "gtkmagnifierprivate.h"
magnifier: Port to snapshot Instead of gtk_widget_draw'in the inspected widget inside the magnifier's ::draw handler, just create a new GtkSnapshot and snapshot in its snapshot handler, similar to what GtkStack is doing.
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#include "gtkwidgetprivate.h"
#include "gtksnapshotprivate.h"
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
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#include "gtkintl.h"
enum {
PROP_INSPECTED = 1,
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
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PROP_RESIZE,
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
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PROP_MAGNIFICATION
};
typedef struct _GtkMagnifierPrivate GtkMagnifierPrivate;
struct _GtkMagnifierPrivate
{
GtkWidget *inspected;
gdouble magnification;
gint x;
gint y;
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
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gboolean resize;
gulong draw_handler;
gulong resize_handler;
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
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};
G_DEFINE_TYPE_WITH_PRIVATE (GtkMagnifier, _gtk_magnifier,
GTK_TYPE_WIDGET)
static void
_gtk_magnifier_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec)
{
switch (param_id)
{
case PROP_INSPECTED:
_gtk_magnifier_set_inspected (GTK_MAGNIFIER (object),
g_value_get_object (value));
break;
case PROP_MAGNIFICATION:
_gtk_magnifier_set_magnification (GTK_MAGNIFIER (object),
g_value_get_double (value));
break;
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
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case PROP_RESIZE:
_gtk_magnifier_set_resize (GTK_MAGNIFIER (object),
g_value_get_boolean (value));
break;
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
2013-12-11 14:42:10 +00:00
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
}
}
static void
_gtk_magnifier_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec)
{
GtkMagnifier *magnifier;
GtkMagnifierPrivate *priv;
magnifier = GTK_MAGNIFIER (object);
priv = _gtk_magnifier_get_instance_private (magnifier);
switch (param_id)
{
case PROP_INSPECTED:
g_value_set_object (value, priv->inspected);
break;
case PROP_MAGNIFICATION:
g_value_set_double (value, priv->magnification);
break;
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
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case PROP_RESIZE:
g_value_set_boolean (value, priv->resize);
break;
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
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default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
}
}
magnifier: Port to snapshot Instead of gtk_widget_draw'in the inspected widget inside the magnifier's ::draw handler, just create a new GtkSnapshot and snapshot in its snapshot handler, similar to what GtkStack is doing.
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static void
gtk_magnifier_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
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{
magnifier: Port to snapshot Instead of gtk_widget_draw'in the inspected widget inside the magnifier's ::draw handler, just create a new GtkSnapshot and snapshot in its snapshot handler, similar to what GtkStack is doing.
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GtkMagnifier *magnifier = GTK_MAGNIFIER (widget);
GtkMagnifierPrivate *priv = _gtk_magnifier_get_instance_private (magnifier);
GtkSnapshot inspected_snapshot;
GskRenderNode *inspected_node;
graphene_matrix_t transform;
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
2013-12-11 14:42:10 +00:00
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
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if (priv->inspected == NULL)
magnifier: Port to snapshot Instead of gtk_widget_draw'in the inspected widget inside the magnifier's ::draw handler, just create a new GtkSnapshot and snapshot in its snapshot handler, similar to what GtkStack is doing.
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return;
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
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Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
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if (!gtk_widget_is_visible (priv->inspected))
magnifier: Port to snapshot Instead of gtk_widget_draw'in the inspected widget inside the magnifier's ::draw handler, just create a new GtkSnapshot and snapshot in its snapshot handler, similar to what GtkStack is doing.
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return;
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
2013-12-11 14:42:10 +00:00
magnifier: Port to snapshot Instead of gtk_widget_draw'in the inspected widget inside the magnifier's ::draw handler, just create a new GtkSnapshot and snapshot in its snapshot handler, similar to what GtkStack is doing.
2017-08-23 13:00:59 +00:00
g_signal_handler_block (priv->inspected, priv->draw_handler);
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
2014-12-21 00:16:46 +00:00
magnifier: Port to snapshot Instead of gtk_widget_draw'in the inspected widget inside the magnifier's ::draw handler, just create a new GtkSnapshot and snapshot in its snapshot handler, similar to what GtkStack is doing.
2017-08-23 13:00:59 +00:00
gtk_snapshot_init (&inspected_snapshot,
gtk_snapshot_get_renderer (snapshot),
snapshot->record_names,
NULL,
"MagnifierSnapshot");
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
2013-12-11 14:42:10 +00:00
magnifier: Port to snapshot Instead of gtk_widget_draw'in the inspected widget inside the magnifier's ::draw handler, just create a new GtkSnapshot and snapshot in its snapshot handler, similar to what GtkStack is doing.
2017-08-23 13:00:59 +00:00
gtk_widget_snapshot (priv->inspected, &inspected_snapshot);
inspected_node = gtk_snapshot_finish (&inspected_snapshot);
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
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magnifier: gtk_snapshot_finish may return NULL
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if (inspected_node != NULL)
{
graphene_matrix_init_identity (&transform);
graphene_matrix_scale (&transform, priv->magnification, priv->magnification, 1);
magnifier: Port to snapshot Instead of gtk_widget_draw'in the inspected widget inside the magnifier's ::draw handler, just create a new GtkSnapshot and snapshot in its snapshot handler, similar to what GtkStack is doing.
2017-08-23 13:00:59 +00:00
magnifier: gtk_snapshot_finish may return NULL
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gtk_snapshot_push_transform (snapshot, &transform, "Magnifier transform");
gtk_snapshot_append_node (snapshot, inspected_node);
gtk_snapshot_pop (snapshot);
}
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
2013-12-11 14:42:10 +00:00
magnifier: Port to snapshot Instead of gtk_widget_draw'in the inspected widget inside the magnifier's ::draw handler, just create a new GtkSnapshot and snapshot in its snapshot handler, similar to what GtkStack is doing.
2017-08-23 13:00:59 +00:00
g_signal_handler_unblock (priv->inspected, priv->draw_handler);
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
2013-12-11 14:42:10 +00:00
}
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
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static void
widget: Use ::measure vfunc to measure size Add a new ::measure vfunc similar to GtkCssGadget's that widget implementations have to override instead of the old get_preferred_width, get_preferred_height, get_preferred_width_for_height, get_preferred_height_for_width and get_preferred_height_and_baseline_for_width.
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gtk_magnifier_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
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{
widget: Use ::measure vfunc to measure size Add a new ::measure vfunc similar to GtkCssGadget's that widget implementations have to override instead of the old get_preferred_width, get_preferred_height, get_preferred_width_for_height, get_preferred_height_for_width and get_preferred_height_and_baseline_for_width.
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GtkMagnifier *magnifier = GTK_MAGNIFIER (widget);
GtkMagnifierPrivate *priv = _gtk_magnifier_get_instance_private (magnifier);
gint size;
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
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if (priv->resize && priv->inspected)
widget: Use ::measure vfunc to measure size Add a new ::measure vfunc similar to GtkCssGadget's that widget implementations have to override instead of the old get_preferred_width, get_preferred_height, get_preferred_width_for_height, get_preferred_height_for_width and get_preferred_height_and_baseline_for_width.
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{
if (orientation == GTK_ORIENTATION_HORIZONTAL)
size = priv->magnification * gtk_widget_get_allocated_width (priv->inspected);
else
size = priv->magnification * gtk_widget_get_allocated_height (priv->inspected);
}
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
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else
widget: Use ::measure vfunc to measure size Add a new ::measure vfunc similar to GtkCssGadget's that widget implementations have to override instead of the old get_preferred_width, get_preferred_height, get_preferred_width_for_height, get_preferred_height_for_width and get_preferred_height_and_baseline_for_width.
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size = 0;
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
2014-12-21 00:16:46 +00:00
widget: Use ::measure vfunc to measure size Add a new ::measure vfunc similar to GtkCssGadget's that widget implementations have to override instead of the old get_preferred_width, get_preferred_height, get_preferred_width_for_height, get_preferred_height_for_width and get_preferred_height_and_baseline_for_width.
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*minimum = size;
*natural = size;
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
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}
static void
resize_handler (GtkWidget *widget,
GtkAllocation *alloc,
widget: Add baseline and out_clip parameters to size-allocate Since setting a clip is mandatory for almost all widgets, we can as well change the size-allocate signature to include a out_clip parameter, just like GtkCssGadget did. And since we now always propagate baselines, we might as well pass that one on to size-allocate. This way we can also make sure to transform the clip returned from size-allocate to parent-coordinates, i.e. the same coordinate space priv->allocation is in.
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int baseline,
GtkAllocation *out_clip,
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
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GtkWidget *magnifier)
{
gtk_widget_queue_resize (magnifier);
}
static void
connect_resize_handler (GtkMagnifier *magnifier)
{
GtkMagnifierPrivate *priv;
priv = _gtk_magnifier_get_instance_private (magnifier);
if (priv->inspected && priv->resize)
priv->resize_handler = g_signal_connect (priv->inspected, "size-allocate",
G_CALLBACK (resize_handler), magnifier);
}
static void
disconnect_resize_handler (GtkMagnifier *magnifier)
{
GtkMagnifierPrivate *priv;
priv = _gtk_magnifier_get_instance_private (magnifier);
if (priv->resize_handler)
{
gtkmagnifier: Avoid a crash if the inspected widget is finalized If the inspected widget is finalized and we then try to disconnect from its signals we'll crash. https://bugzilla.gnome.org/show_bug.cgi?id=761775
2016-02-09 14:30:00 +00:00
if (priv->inspected)
g_signal_handler_disconnect (priv->inspected, priv->resize_handler);
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
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priv->resize_handler = 0;
}
}
static gboolean
draw_handler (GtkWidget *widget,
cairo_t *cr,
GtkWidget *magnifier)
{
gtk_widget_queue_draw (magnifier);
magnifier: Port to snapshot Instead of gtk_widget_draw'in the inspected widget inside the magnifier's ::draw handler, just create a new GtkSnapshot and snapshot in its snapshot handler, similar to what GtkStack is doing.
2017-08-23 13:00:59 +00:00
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
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return FALSE;
}
static void
connect_draw_handler (GtkMagnifier *magnifier)
{
GtkMagnifierPrivate *priv;
priv = _gtk_magnifier_get_instance_private (magnifier);
magnifier: Only connect to ::draw when needed This making us take the slow path in ::draw handling, so we want to avoid it if we can. https://bugzilla.gnome.org/show_bug.cgi?id=765238
2016-04-19 19:27:08 +00:00
if (!priv->draw_handler)
{
if (priv->inspected)
priv->draw_handler = g_signal_connect (priv->inspected, "draw",
G_CALLBACK (draw_handler), magnifier);
}
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
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}
static void
disconnect_draw_handler (GtkMagnifier *magnifier)
{
GtkMagnifierPrivate *priv;
priv = _gtk_magnifier_get_instance_private (magnifier);
if (priv->draw_handler)
{
gtkmagnifier: Avoid a crash if the inspected widget is finalized If the inspected widget is finalized and we then try to disconnect from its signals we'll crash. https://bugzilla.gnome.org/show_bug.cgi?id=761775
2016-02-09 14:30:00 +00:00
if (priv->inspected)
g_signal_handler_disconnect (priv->inspected, priv->draw_handler);
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
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priv->draw_handler = 0;
}
}
static void
_gtk_magnifier_destroy (GtkWidget *widget)
{
_gtk_magnifier_set_inspected (GTK_MAGNIFIER (widget), NULL);
GTK_WIDGET_CLASS (_gtk_magnifier_parent_class)->destroy (widget);
}
magnifier: Only connect to ::draw when needed This making us take the slow path in ::draw handling, so we want to avoid it if we can. https://bugzilla.gnome.org/show_bug.cgi?id=765238
2016-04-19 19:27:08 +00:00
static void
gtk_magnifier_map (GtkWidget *widget)
{
connect_draw_handler (GTK_MAGNIFIER (widget));
GTK_WIDGET_CLASS (_gtk_magnifier_parent_class)->map (widget);
}
static void
gtk_magnifier_unmap (GtkWidget *widget)
{
GTK_WIDGET_CLASS (_gtk_magnifier_parent_class)->unmap (widget);
disconnect_draw_handler (GTK_MAGNIFIER (widget));
}
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
2013-12-11 14:42:10 +00:00
static void
_gtk_magnifier_class_init (GtkMagnifierClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->set_property = _gtk_magnifier_set_property;
object_class->get_property = _gtk_magnifier_get_property;
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
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widget_class->destroy = _gtk_magnifier_destroy;
magnifier: Port to snapshot Instead of gtk_widget_draw'in the inspected widget inside the magnifier's ::draw handler, just create a new GtkSnapshot and snapshot in its snapshot handler, similar to what GtkStack is doing.
2017-08-23 13:00:59 +00:00
widget_class->snapshot = gtk_magnifier_snapshot;
widget: Use ::measure vfunc to measure size Add a new ::measure vfunc similar to GtkCssGadget's that widget implementations have to override instead of the old get_preferred_width, get_preferred_height, get_preferred_width_for_height, get_preferred_height_for_width and get_preferred_height_and_baseline_for_width.
2016-10-22 14:06:14 +00:00
widget_class->measure = gtk_magnifier_measure;
magnifier: Only connect to ::draw when needed This making us take the slow path in ::draw handling, so we want to avoid it if we can. https://bugzilla.gnome.org/show_bug.cgi?id=765238
2016-04-19 19:27:08 +00:00
widget_class->map = gtk_magnifier_map;
widget_class->unmap = gtk_magnifier_unmap;
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
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g_object_class_install_property (object_class,
PROP_INSPECTED,
gtkmagnifier: do not use P_() macro for property names
2014-02-07 07:17:11 +00:00
g_param_spec_object ("inspected",
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
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P_("Inspected"),
P_("Inspected widget"),
GTK_TYPE_WIDGET,
G_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_MAGNIFICATION,
gtkmagnifier: do not use P_() macro for property names
2014-02-07 07:17:11 +00:00
g_param_spec_double ("magnification",
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
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P_("magnification"),
P_("magnification"),
1, G_MAXDOUBLE, 1,
G_PARAM_READWRITE));
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
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g_object_class_install_property (object_class,
PROP_RESIZE,
g_param_spec_boolean ("resize",
P_("resize"),
P_("resize"),
FALSE,
G_PARAM_READWRITE));
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
2013-12-11 14:42:10 +00:00
}
static void
_gtk_magnifier_init (GtkMagnifier *magnifier)
{
GtkWidget *widget = GTK_WIDGET (magnifier);
GtkMagnifierPrivate *priv;
priv = _gtk_magnifier_get_instance_private (magnifier);
gtk_widget_set_has_window (widget, FALSE);
priv->magnification = 1;
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
2014-12-21 00:16:46 +00:00
priv->resize = FALSE;
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
2013-12-11 14:42:10 +00:00
}
GtkWidget *
_gtk_magnifier_new (GtkWidget *inspected)
{
g_return_val_if_fail (GTK_IS_WIDGET (inspected), NULL);
return g_object_new (GTK_TYPE_MAGNIFIER,
"inspected", inspected,
NULL);
}
GtkWidget *
_gtk_magnifier_get_inspected (GtkMagnifier *magnifier)
{
GtkMagnifierPrivate *priv;
g_return_val_if_fail (GTK_IS_MAGNIFIER (magnifier), NULL);
priv = _gtk_magnifier_get_instance_private (magnifier);
return priv->inspected;
}
void
_gtk_magnifier_set_inspected (GtkMagnifier *magnifier,
GtkWidget *inspected)
{
GtkMagnifierPrivate *priv;
magnifier: Fix compiler warning
2014-01-22 19:48:51 +00:00
g_return_if_fail (GTK_IS_MAGNIFIER (magnifier));
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
2013-12-11 14:42:10 +00:00
priv = _gtk_magnifier_get_instance_private (magnifier);
if (priv->inspected == inspected)
return;
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
2014-12-21 00:16:46 +00:00
disconnect_draw_handler (magnifier);
disconnect_resize_handler (magnifier);
gtkmagnifier: Avoid a crash if the inspected widget is finalized If the inspected widget is finalized and we then try to disconnect from its signals we'll crash. https://bugzilla.gnome.org/show_bug.cgi?id=761775
2016-02-09 14:30:00 +00:00
if (priv->inspected)
g_object_remove_weak_pointer (G_OBJECT (priv->inspected),
(gpointer *) &priv->inspected);
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
2013-12-11 14:42:10 +00:00
priv->inspected = inspected;
gtkmagnifier: Avoid a crash if the inspected widget is finalized If the inspected widget is finalized and we then try to disconnect from its signals we'll crash. https://bugzilla.gnome.org/show_bug.cgi?id=761775
2016-02-09 14:30:00 +00:00
if (priv->inspected)
g_object_add_weak_pointer (G_OBJECT (priv->inspected),
(gpointer *) &priv->inspected);
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
2014-12-21 00:16:46 +00:00
magnifier: Only connect to ::draw when needed This making us take the slow path in ::draw handling, so we want to avoid it if we can. https://bugzilla.gnome.org/show_bug.cgi?id=765238
2016-04-19 19:27:08 +00:00
if (gtk_widget_get_mapped (GTK_WIDGET (magnifier)))
connect_draw_handler (magnifier);
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
2014-12-21 00:16:46 +00:00
connect_resize_handler (magnifier);
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
2013-12-11 14:42:10 +00:00
g_object_notify (G_OBJECT (magnifier), "inspected");
}
void
_gtk_magnifier_set_coords (GtkMagnifier *magnifier,
gdouble x,
gdouble y)
{
GtkMagnifierPrivate *priv;
g_return_if_fail (GTK_IS_MAGNIFIER (magnifier));
priv = _gtk_magnifier_get_instance_private (magnifier);
if (priv->x == x && priv->y == y)
return;
priv->x = x;
priv->y = y;
if (gtk_widget_is_visible (GTK_WIDGET (magnifier)))
gtk_widget_queue_draw (GTK_WIDGET (magnifier));
}
void
_gtk_magnifier_get_coords (GtkMagnifier *magnifier,
gdouble *x,
gdouble *y)
{
GtkMagnifierPrivate *priv;
g_return_if_fail (GTK_IS_MAGNIFIER (magnifier));
priv = _gtk_magnifier_get_instance_private (magnifier);
if (x)
*x = priv->x;
if (y)
*y = priv->y;
}
void
_gtk_magnifier_set_magnification (GtkMagnifier *magnifier,
gdouble magnification)
{
GtkMagnifierPrivate *priv;
g_return_if_fail (GTK_IS_MAGNIFIER (magnifier));
priv = _gtk_magnifier_get_instance_private (magnifier);
if (priv->magnification == magnification)
return;
priv->magnification = magnification;
g_object_notify (G_OBJECT (magnifier), "magnification");
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
2014-12-21 00:16:46 +00:00
if (priv->resize)
gtk_widget_queue_resize (GTK_WIDGET (magnifier));
Add GtkMagnifier This is a private widget that takes another widget on construction, and is able to render parts of it, possibly at a different magnification level.
2013-12-11 14:42:10 +00:00
if (gtk_widget_is_visible (GTK_WIDGET (magnifier)))
gtk_widget_queue_draw (GTK_WIDGET (magnifier));
}
gdouble
_gtk_magnifier_get_magnification (GtkMagnifier *magnifier)
{
GtkMagnifierPrivate *priv;
g_return_val_if_fail (GTK_IS_MAGNIFIER (magnifier), 1);
priv = _gtk_magnifier_get_instance_private (magnifier);
return priv->magnification;
}
GtkMagnifier: Add a resizing mode In addition to the fixed-size mode that is used by the text view, add a mode in which the magnifier requests enough size to render the entire inspected widget at the current magnification. In this mode, the magnifier will update its size when the size of the inspected widget changes. Also, make the magnifier redraw on its own whenever the inspected widget draws.
2014-12-21 00:16:46 +00:00
void
_gtk_magnifier_set_resize (GtkMagnifier *magnifier,
gboolean resize)
{
GtkMagnifierPrivate *priv;
g_return_if_fail (GTK_IS_MAGNIFIER (magnifier));
priv = _gtk_magnifier_get_instance_private (magnifier);
if (priv->resize == resize)
return;
priv->resize = resize;
gtk_widget_queue_resize (GTK_WIDGET (magnifier));
if (resize)
connect_resize_handler (magnifier);
else
disconnect_resize_handler (magnifier);
}
gboolean
_gtk_magnifier_get_resize (GtkMagnifier *magnifier)
{
GtkMagnifierPrivate *priv;
g_return_val_if_fail (GTK_IS_MAGNIFIER (magnifier), FALSE);
priv = _gtk_magnifier_get_instance_private (magnifier);
return priv->resize;
}
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