-/* GtkSHRuler
+/* LIBGTK - The GTK Library
+ * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
- * Copyright (C) 2000-2011 Alfons Hoogervorst & The Claws Mail Team
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
+ * 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 3 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.
+ * Lesser 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, see <http://www.gnu.org/licenses/>.
- */
-
-/* I derived this class from hruler. S in HRuler could be read as
- * Sylpheed (sylpheed.good-day.net), but also [S]ettable HRuler.
- * I basically ripped apart the draw_ticks member of HRuler; it
- * now draws the ticks at ruler->max_size. so gtk_ruler_set_range's
- * last parameter has the distance between two ticks (which is
- * the width of the fixed font character!
- *
- * -- Alfons
+ * 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 "claws-features.h"
+
#include <math.h>
-#include <stdio.h>
#include <string.h>
+
#include <gtk/gtk.h>
-#include "gtkshruler.h"
-#include "utils.h"
-#include "gtkutils.h"
-#define RULER_HEIGHT 14
-#define MINIMUM_INCR 5
-#define MAXIMUM_SUBDIVIDE 5
-#define MAXIMUM_SCALES 10
+#include "gtkutils.h"
+#include "gtkshruler.h"
+#include "gtkunit.h"
#define ROUND(x) ((int) ((x) + 0.5))
-static void gtk_shruler_class_init (GtkSHRulerClass *klass);
-static void gtk_shruler_init (GtkSHRuler *hruler);
-static void gtk_shruler_draw_ticks (GtkRuler *ruler);
+/**
+ * SECTION: gimpparam
+ * @title: gimpparam
+ * @short_description: Definitions of useful #GParamFlags.
+ *
+ * Definitions of useful #GParamFlags.
+ **/
+
+
+/**
+ * GTK_PARAM_STATIC_STRINGS:
+ *
+ * Since: GTK 2.4
+ **/
+#define GTK_PARAM_STATIC_STRINGS (G_PARAM_STATIC_NAME | \
+ G_PARAM_STATIC_NICK | \
+ G_PARAM_STATIC_BLURB)
+
+/**
+ * GTK_PARAM_READABLE:
+ *
+ * Since: GTK 2.4
+ **/
+#define GTK_PARAM_READABLE (G_PARAM_READABLE | \
+ GTK_PARAM_STATIC_STRINGS)
+
+/**
+ * GTK_PARAM_WRITABLE:
+ *
+ * Since: GTK 2.4
+ **/
+#define GTK_PARAM_WRITABLE (G_PARAM_WRITABLE | \
+ GTK_PARAM_STATIC_STRINGS)
+
+/**
+ * GTK_PARAM_READWRITE:
+ *
+ * Since: GTK 2.4
+ **/
+#define GTK_PARAM_READWRITE (G_PARAM_READWRITE | \
+ GTK_PARAM_STATIC_STRINGS)
+
+
+/**
+ * SECTION: gimpruler
+ * @title: GtkSHRuler
+ * @short_description: A ruler widget with configurable unit and orientation.
+ *
+ * A ruler widget with configurable unit and orientation.
+ **/
+
+
+#define DEFAULT_RULER_FONT_SCALE PANGO_SCALE_SMALL
+#define MINIMUM_INCR 5
+
+
+enum
+{
+ PROP_0,
+ PROP_ORIENTATION,
+ PROP_UNIT,
+ PROP_LOWER,
+ PROP_UPPER,
+ PROP_POSITION,
+ PROP_MAX_SIZE
+};
+
+
+/* All distances below are in 1/72nd's of an inch. (According to
+ * Adobe that's a point, but points are really 1/72.27 in.)
+ */
+typedef struct
+{
+ GtkOrientation orientation;
+ GtkCMUnit unit;
+ gdouble lower;
+ gdouble upper;
+ gdouble position;
+ gdouble max_size;
+
+ GdkWindow *input_window;
+ cairo_surface_t *backing_store;
+ PangoLayout *layout;
+ gdouble font_scale;
+
+ gint xsrc;
+ gint ysrc;
+} GtkSHRulerPrivate;
+
+#define GTK_SHRULER_GET_PRIVATE(ruler) \
+ G_TYPE_INSTANCE_GET_PRIVATE (ruler, GTK_TYPE_SHRULER, GtkSHRulerPrivate)
+
+
+static const struct
+{
+ const gdouble ruler_scale[16];
+ const gint subdivide[3];
+} ruler_metric =
+{
+ { 1, 2, 5, 10, 25, 50, 100, 250, 500, 1000, 2500, 5000, 10000, 25000, 50000, 100000 },
+ { 1, 5, 10 }
+};
+
+
+static void gtk_shruler_dispose (GObject *object);
+static void gtk_shruler_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void gtk_shruler_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec);
+
+static void gtk_shruler_realize (GtkWidget *widget);
+static void gtk_shruler_unrealize (GtkWidget *widget);
+static void gtk_shruler_map (GtkWidget *widget);
+static void gtk_shruler_unmap (GtkWidget *widget);
+static void gtk_shruler_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation);
+static void gtk_shruler_size_request (GtkWidget *widget,
+ GtkRequisition *requisition);
+static void gtk_shruler_style_set (GtkWidget *widget,
+ GtkStyle *prev_style);
+static gboolean gtk_shruler_motion_notify (GtkWidget *widget,
+ GdkEventMotion *event);
+static gboolean gtk_shruler_expose (GtkWidget *widget,
+ GdkEventExpose *event);
+
+static void gtk_shruler_draw_ticks (GtkSHRuler *ruler);
+static void gtk_shruler_make_pixmap (GtkSHRuler *ruler);
+
+static PangoLayout * gtk_shruler_get_layout (GtkWidget *widget,
+ const gchar *text);
+
+#if !GLIB_CHECK_VERSION(2, 58, 0)
+G_DEFINE_TYPE (GtkSHRuler, gtk_shruler, GTK_TYPE_WIDGET)
+#else
+G_DEFINE_TYPE_WITH_CODE (GtkSHRuler, gtk_shruler, GTK_TYPE_WIDGET,
+ G_ADD_PRIVATE(GtkSHRuler))
+#endif
+
+#define parent_class gtk_shruler_parent_class
+
+
+static void
+gtk_shruler_class_init (GtkSHRulerClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+ object_class->dispose = gtk_shruler_dispose;
+ object_class->set_property = gtk_shruler_set_property;
+ object_class->get_property = gtk_shruler_get_property;
+
+ widget_class->realize = gtk_shruler_realize;
+ widget_class->unrealize = gtk_shruler_unrealize;
+ widget_class->map = gtk_shruler_map;
+ widget_class->unmap = gtk_shruler_unmap;
+ widget_class->size_allocate = gtk_shruler_size_allocate;
+ widget_class->size_request = gtk_shruler_size_request;
+ widget_class->style_set = gtk_shruler_style_set;
+ widget_class->motion_notify_event = gtk_shruler_motion_notify;
+ widget_class->expose_event = gtk_shruler_expose;
+
+ g_type_class_add_private (object_class, sizeof (GtkSHRulerPrivate));
+
+ g_object_class_install_property (object_class,
+ PROP_ORIENTATION,
+ g_param_spec_enum ("orientation",
+ "Orientation",
+ "The orientation of the ruler",
+ GTK_TYPE_ORIENTATION,
+ GTK_ORIENTATION_HORIZONTAL,
+ GTK_PARAM_READWRITE));
+
+ g_object_class_install_property (object_class,
+ PROP_LOWER,
+ gtk_param_spec_unit ("unit",
+ "Unit",
+ "Unit of ruler",
+ TRUE, TRUE,
+ CM_UNIT_PIXEL,
+ GTK_PARAM_READWRITE));
+
+ g_object_class_install_property (object_class,
+ PROP_LOWER,
+ g_param_spec_double ("lower",
+ "Lower",
+ "Lower limit of ruler",
+ -G_MAXDOUBLE,
+ G_MAXDOUBLE,
+ 0.0,
+ GTK_PARAM_READWRITE));
+
+ g_object_class_install_property (object_class,
+ PROP_UPPER,
+ g_param_spec_double ("upper",
+ "Upper",
+ "Upper limit of ruler",
+ -G_MAXDOUBLE,
+ G_MAXDOUBLE,
+ 0.0,
+ GTK_PARAM_READWRITE));
+
+ g_object_class_install_property (object_class,
+ PROP_POSITION,
+ g_param_spec_double ("position",
+ "Position",
+ "Position of mark on the ruler",
+ -G_MAXDOUBLE,
+ G_MAXDOUBLE,
+ 0.0,
+ GTK_PARAM_READWRITE));
+
+ g_object_class_install_property (object_class,
+ PROP_MAX_SIZE,
+ g_param_spec_double ("max-size",
+ "Max Size",
+ "Maximum size of the ruler",
+ -G_MAXDOUBLE,
+ G_MAXDOUBLE,
+ 0.0,
+ GTK_PARAM_READWRITE));
+
+ gtk_widget_class_install_style_property (widget_class,
+ g_param_spec_double ("font-scale",
+ NULL, NULL,
+ 0.0,
+ G_MAXDOUBLE,
+ DEFAULT_RULER_FONT_SCALE,
+ GTK_PARAM_READABLE));
+}
+
+static void
+gtk_shruler_init (GtkSHRuler *ruler)
+{
+ GtkSHRulerPrivate *priv = GTK_SHRULER_GET_PRIVATE (ruler);
+
+ gtk_widget_set_has_window (GTK_WIDGET (ruler), FALSE);
+
+ priv->orientation = GTK_ORIENTATION_HORIZONTAL;
+ priv->unit = GTK_PIXELS;
+ priv->lower = 0;
+ priv->upper = 0;
+ priv->position = 0;
+ priv->max_size = 0;
+ priv->backing_store = NULL;
+ priv->font_scale = DEFAULT_RULER_FONT_SCALE;
+}
+
+static void
+gtk_shruler_dispose (GObject *object)
+{
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gtk_shruler_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GtkSHRuler *ruler = GTK_SHRULER (object);
+ GtkSHRulerPrivate *priv = GTK_SHRULER_GET_PRIVATE (ruler);
+
+ switch (prop_id)
+ {
+ case PROP_ORIENTATION:
+ priv->orientation = g_value_get_enum (value);
+ gtk_widget_queue_resize (GTK_WIDGET (ruler));
+ break;
+
+ case PROP_UNIT:
+ gtk_shruler_set_unit (ruler, g_value_get_int (value));
+ break;
+
+ case PROP_LOWER:
+ gtk_shruler_set_range (ruler,
+ g_value_get_double (value),
+ priv->upper,
+ priv->max_size);
+ break;
+ case PROP_UPPER:
+ gtk_shruler_set_range (ruler,
+ priv->lower,
+ g_value_get_double (value),
+ priv->max_size);
+ break;
+
+ case PROP_POSITION:
+ gtk_shruler_set_position (ruler, g_value_get_double (value));
+ break;
+
+ case PROP_MAX_SIZE:
+ gtk_shruler_set_range (ruler,
+ priv->lower,
+ priv->upper,
+ g_value_get_double (value));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gtk_shruler_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GtkSHRuler *ruler = GTK_SHRULER (object);
+ GtkSHRulerPrivate *priv = GTK_SHRULER_GET_PRIVATE (ruler);
+
+ switch (prop_id)
+ {
+ case PROP_ORIENTATION:
+ g_value_set_enum (value, priv->orientation);
+ break;
+
+ case PROP_UNIT:
+ g_value_set_int (value, priv->unit);
+ break;
+
+ case PROP_LOWER:
+ g_value_set_double (value, priv->lower);
+ break;
+
+ case PROP_UPPER:
+ g_value_set_double (value, priv->upper);
+ break;
+
+ case PROP_POSITION:
+ g_value_set_double (value, priv->position);
+ break;
+
+ case PROP_MAX_SIZE:
+ g_value_set_double (value, priv->max_size);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+/**
+ * gtk_shruler_new:
+ * @orientation: the ruler's orientation.
+ *
+ * Creates a new ruler.
+ *
+ * Return value: a new #GtkSHRuler widget.
+ *
+ * Since: GTK 2.8
+ **/
+GtkWidget *
+gtk_shruler_new (GtkOrientation orientation)
+{
+ return g_object_new (GTK_TYPE_SHRULER,
+ "orientation", orientation,
+ NULL);
+}
+
+static void
+gtk_shruler_update_position (GtkSHRuler *ruler,
+ gdouble x,
+ gdouble y)
+{
+ GtkSHRulerPrivate *priv = GTK_SHRULER_GET_PRIVATE (ruler);
+ GtkAllocation allocation;
+ gdouble lower;
+ gdouble upper;
+
+ gtk_widget_get_allocation (GTK_WIDGET (ruler), &allocation);
+ gtk_shruler_get_range (ruler, &lower, &upper, NULL);
+
+ if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ gtk_shruler_set_position (ruler,
+ lower +
+ (upper - lower) * x / allocation.width);
+ }
+ else
+ {
+ gtk_shruler_set_position (ruler,
+ lower +
+ (upper - lower) * y / allocation.height);
+ }
+}
+
+/**
+ * gtk_shruler_set_unit:
+ * @ruler: a #GtkSHRuler
+ * @unit: the #GtkCMUnit to set the ruler to
+ *
+ * This sets the unit of the ruler.
+ *
+ * Since: GTK 2.8
+ */
+void
+gtk_shruler_set_unit (GtkSHRuler *ruler,
+ GtkCMUnit unit)
+{
+ GtkSHRulerPrivate *priv;
+
+ g_return_if_fail (GTK_IS_SHRULER (ruler));
+
+ priv = GTK_SHRULER_GET_PRIVATE (ruler);
+
+ if (priv->unit != unit)
+ {
+ priv->unit = unit;
+ g_object_notify (G_OBJECT (ruler), "unit");
+
+ gtk_widget_queue_draw (GTK_WIDGET (ruler));
+ }
+}
+
+/**
+ * gtk_shruler_get_unit:
+ * @ruler: a #GtkSHRuler
+ *
+ * Return value: the unit currently used in the @ruler widget.
+ *
+ * Since: GTK 2.8
+ **/
+GtkCMUnit
+gtk_shruler_get_unit (GtkSHRuler *ruler)
+{
+ g_return_val_if_fail (GTK_IS_SHRULER (ruler), 0);
+
+ return GTK_SHRULER_GET_PRIVATE (ruler)->unit;
+}
+
+/**
+ * gtk_shruler_set_position:
+ * @ruler: a #GtkSHRuler
+ * @position: the position to set the ruler to
+ *
+ * This sets the position of the ruler.
+ *
+ * Since: GTK 2.8
+ */
+void
+gtk_shruler_set_position (GtkSHRuler *ruler,
+ gdouble position)
+{
+ GtkSHRulerPrivate *priv;
+
+ g_return_if_fail (GTK_IS_SHRULER (ruler));
-GType
-gtk_shruler_get_type(void)
+ priv = GTK_SHRULER_GET_PRIVATE (ruler);
+
+ if (priv->position != position)
+ {
+ priv->position = position;
+ g_object_notify (G_OBJECT (ruler), "position");
+ }
+}
+
+/**
+ * gtk_shruler_get_position:
+ * @ruler: a #GtkSHRuler
+ *
+ * Return value: the current position of the @ruler widget.
+ *
+ * Since: GTK 2.8
+ **/
+gdouble
+gtk_shruler_get_position (GtkSHRuler *ruler)
+{
+ g_return_val_if_fail (GTK_IS_SHRULER (ruler), 0.0);
+
+ return GTK_SHRULER_GET_PRIVATE (ruler)->position;
+}
+
+/**
+ * gtk_shruler_set_range:
+ * @ruler: a #GtkSHRuler
+ * @lower: the lower limit of the ruler
+ * @upper: the upper limit of the ruler
+ * @max_size: the maximum size of the ruler used when calculating the space to
+ * leave for the text
+ *
+ * This sets the range of the ruler.
+ *
+ * Since: GTK 2.8
+ */
+void
+gtk_shruler_set_range (GtkSHRuler *ruler,
+ gdouble lower,
+ gdouble upper,
+ gdouble max_size)
+{
+ GtkSHRulerPrivate *priv;
+
+ g_return_if_fail (GTK_IS_SHRULER (ruler));
+
+ priv = GTK_SHRULER_GET_PRIVATE (ruler);
+
+ g_object_freeze_notify (G_OBJECT (ruler));
+ if (priv->lower != lower)
+ {
+ priv->lower = lower;
+ g_object_notify (G_OBJECT (ruler), "lower");
+ }
+ if (priv->upper != upper)
+ {
+ priv->upper = upper;
+ g_object_notify (G_OBJECT (ruler), "upper");
+ }
+ if (priv->max_size != max_size)
+ {
+ priv->max_size = max_size;
+ g_object_notify (G_OBJECT (ruler), "max-size");
+ }
+ g_object_thaw_notify (G_OBJECT (ruler));
+
+ gtk_widget_queue_draw (GTK_WIDGET (ruler));
+}
+
+/**
+ * gtk_shruler_get_range:
+ * @ruler: a #GtkSHRuler
+ * @lower: location to store lower limit of the ruler, or %NULL
+ * @upper: location to store upper limit of the ruler, or %NULL
+ * @max_size: location to store the maximum size of the ruler used when
+ * calculating the space to leave for the text, or %NULL.
+ *
+ * Retrieves values indicating the range and current position of a #GtkSHRuler.
+ * See gtk_shruler_set_range().
+ *
+ * Since: GTK 2.8
+ **/
+void
+gtk_shruler_get_range (GtkSHRuler *ruler,
+ gdouble *lower,
+ gdouble *upper,
+ gdouble *max_size)
+{
+ GtkSHRulerPrivate *priv;
+
+ g_return_if_fail (GTK_IS_SHRULER (ruler));
+
+ priv = GTK_SHRULER_GET_PRIVATE (ruler);
+
+ if (lower)
+ *lower = priv->lower;
+ if (upper)
+ *upper = priv->upper;
+ if (max_size)
+ *max_size = priv->max_size;
+}
+
+static void
+gtk_shruler_realize (GtkWidget *widget)
+{
+ GtkSHRuler *ruler = GTK_SHRULER (widget);
+ GtkSHRulerPrivate *priv = GTK_SHRULER_GET_PRIVATE (ruler);
+ GtkAllocation allocation;
+ GdkWindowAttr attributes;
+ gint attributes_mask;
+
+ GTK_WIDGET_CLASS (gtk_shruler_parent_class)->realize (widget);
+
+ gtk_widget_get_allocation (widget, &allocation);
+
+ attributes.window_type = GDK_WINDOW_CHILD;
+ attributes.x = allocation.x;
+ attributes.y = allocation.y;
+ attributes.width = allocation.width;
+ attributes.height = allocation.height;
+ attributes.wclass = GDK_INPUT_ONLY;
+ attributes.event_mask = (gtk_widget_get_events (widget) |
+ GDK_EXPOSURE_MASK |
+ GDK_POINTER_MOTION_MASK |
+ GDK_POINTER_MOTION_HINT_MASK);
+
+ attributes_mask = GDK_WA_X | GDK_WA_Y;
+
+ priv->input_window = gdk_window_new (gtk_widget_get_window (widget),
+ &attributes, attributes_mask);
+ gdk_window_set_user_data (priv->input_window, ruler);
+
+ gtk_shruler_make_pixmap (ruler);
+}
+
+static void
+gtk_shruler_unrealize (GtkWidget *widget)
{
- static GType shruler_type = 0;
+ GtkSHRuler *ruler = GTK_SHRULER (widget);
+ GtkSHRulerPrivate *priv = GTK_SHRULER_GET_PRIVATE (ruler);
- if ( !shruler_type ) {
- static const GTypeInfo shruler_info = {
- sizeof (GtkSHRulerClass),
+ if (priv->backing_store)
+ {
+ cairo_surface_destroy (priv->backing_store);
+ priv->backing_store = NULL;
+ }
- (GBaseInitFunc) NULL,
- (GBaseFinalizeFunc) NULL,
+ if (priv->layout)
+ {
+ g_object_unref (priv->layout);
+ priv->layout = NULL;
+ }
- (GClassInitFunc) gtk_shruler_class_init,
- (GClassFinalizeFunc) NULL,
- NULL, /* class_data */
+ if (priv->input_window)
+ {
+ gdk_window_destroy (priv->input_window);
+ priv->input_window = NULL;
+ }
- sizeof (GtkSHRuler),
- 0, /* n_preallocs */
- (GInstanceInitFunc) gtk_shruler_init,
- };
- /* inherit from GtkHRuler */
- shruler_type = g_type_register_static (GTK_TYPE_HRULER, "GtkSHRuler", &shruler_info, (GTypeFlags)0);
- }
- return shruler_type;
+ GTK_WIDGET_CLASS (gtk_shruler_parent_class)->unrealize (widget);
}
static void
-gtk_shruler_class_init(GtkSHRulerClass * klass)
+gtk_shruler_map (GtkWidget *widget)
{
- GtkWidgetClass * widget_class;
- GtkRulerClass * hruler_class;
+ GtkSHRulerPrivate *priv = GTK_SHRULER_GET_PRIVATE (widget);
+
+ GTK_WIDGET_CLASS (parent_class)->map (widget);
- widget_class = GTK_WIDGET_CLASS(klass);
- hruler_class = GTK_RULER_CLASS(klass);
+ if (priv->input_window)
+ gdk_window_show (priv->input_window);
+}
+
+static void
+gtk_shruler_unmap (GtkWidget *widget)
+{
+ GtkSHRulerPrivate *priv = GTK_SHRULER_GET_PRIVATE (widget);
- /* just neglect motion notify events */
- widget_class->motion_notify_event = NULL /* gtk_shruler_motion_notify */;
+ if (priv->input_window)
+ gdk_window_hide (priv->input_window);
- /* we want the old ruler draw ticks... */
- /* ruler_class->draw_ticks = gtk_hruler_draw_ticks; */
- hruler_class->draw_ticks = gtk_shruler_draw_ticks;
-
- /* unimplemented draw pos */
- hruler_class->draw_pos = NULL;
-/*
- hruler_class->draw_pos = gtk_shruler_draw_pos;
-*/
+ GTK_WIDGET_CLASS (parent_class)->unmap (widget);
}
static void
-gtk_shruler_init (GtkSHRuler * shruler)
+gtk_shruler_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation)
+{
+ GtkSHRuler *ruler = GTK_SHRULER (widget);
+ GtkSHRulerPrivate *priv = GTK_SHRULER_GET_PRIVATE (ruler);
+
+ gtk_widget_set_allocation (widget, allocation);
+
+ if (gtk_widget_get_realized (widget))
+ {
+ gdk_window_move_resize (priv->input_window,
+ allocation->x, allocation->y,
+ allocation->width, allocation->height);
+
+ gtk_shruler_make_pixmap (ruler);
+ }
+}
+
+static void
+gtk_shruler_size_request (GtkWidget *widget,
+ GtkRequisition *requisition)
+{
+ GtkSHRulerPrivate *priv = GTK_SHRULER_GET_PRIVATE (widget);
+ GtkStyle *style = gtk_widget_get_style (widget);
+ PangoLayout *layout;
+ PangoRectangle ink_rect;
+ gint size;
+
+ layout = gtk_shruler_get_layout (widget, "0123456789");
+ pango_layout_get_pixel_extents (layout, &ink_rect, NULL);
+
+ size = 2 + ink_rect.height * 1.7;
+
+ if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ requisition->width = style->xthickness * 2 + 1;
+ requisition->height = style->ythickness * 2 + size;
+ }
+ else
+ {
+ requisition->width = style->xthickness * 2 + size;
+ requisition->height = style->ythickness * 2 + 1;
+ }
+}
+
+static void
+gtk_shruler_style_set (GtkWidget *widget,
+ GtkStyle *prev_style)
+{
+ GtkSHRulerPrivate *priv = GTK_SHRULER_GET_PRIVATE (widget);
+
+ GTK_WIDGET_CLASS (gtk_shruler_parent_class)->style_set (widget, prev_style);
+
+ gtk_widget_style_get (widget,
+ "font-scale", &priv->font_scale,
+ NULL);
+
+ if (priv->layout)
+ {
+ g_object_unref (priv->layout);
+ priv->layout = NULL;
+ }
+}
+
+static gboolean
+gtk_shruler_motion_notify (GtkWidget *widget,
+ GdkEventMotion *event)
{
- GtkWidget * widget;
-
- widget = GTK_WIDGET (shruler);
- widget->requisition.width = widget->style->xthickness * 2 + 1;
- widget->requisition.height = widget->style->ythickness * 2 + RULER_HEIGHT;
+ GtkSHRuler *ruler = GTK_SHRULER (widget);
+
+ gdk_event_request_motions (event);
+
+ gtk_shruler_update_position (ruler, event->x, event->y);
+
+ return FALSE;
}
+static gboolean
+gtk_shruler_expose (GtkWidget *widget,
+ GdkEventExpose *event)
+{
+ if (gtk_widget_is_drawable (widget))
+ {
+ GtkSHRuler *ruler = GTK_SHRULER (widget);
+ GtkSHRulerPrivate *priv = GTK_SHRULER_GET_PRIVATE (ruler);
+ GtkAllocation allocation;
+ cairo_t *cr;
+
+ gtk_shruler_draw_ticks (ruler);
+
+ cr = gdk_cairo_create (gtk_widget_get_window (widget));
+ gdk_cairo_region (cr, event->region);
+ cairo_clip (cr);
+
+ gtk_widget_get_allocation (widget, &allocation);
+ cairo_translate (cr, allocation.x, allocation.y);
-GtkWidget*
-gtk_shruler_new(void)
+ cairo_set_source_surface (cr, priv->backing_store, 0, 0);
+ cairo_paint (cr);
+
+ cairo_destroy (cr);
+ }
+
+ return FALSE;
+}
+
+static void
+gtk_shruler_draw_ticks (GtkSHRuler *ruler)
{
- return GTK_WIDGET( g_object_new( gtk_shruler_get_type(), NULL ) );
+ GtkWidget *widget = GTK_WIDGET (ruler);
+ GtkStyle *style = gtk_widget_get_style (widget);
+ GtkSHRulerPrivate *priv = GTK_SHRULER_GET_PRIVATE (ruler);
+ GtkStateType state = gtk_widget_get_state (widget);
+ GtkAllocation allocation;
+ cairo_t *cr;
+ gint i;
+ gint width, height;
+ gint xthickness;
+ gint ythickness;
+ gint length;
+ gdouble lower, upper; /* Upper and lower limits, in ruler units */
+ gdouble increment; /* Number of pixels per unit */
+ gint scale; /* Number of units per major unit */
+ gdouble start, end, cur;
+ gchar unit_str[32];
+ gint digit_height;
+ gint digit_offset;
+ gint text_size;
+ gint pos;
+ gdouble max_size;
+ GtkCMUnit unit;
+ PangoLayout *layout;
+ PangoRectangle logical_rect, ink_rect;
+
+ if (! gtk_widget_is_drawable (widget))
+ return;
+
+ gtk_widget_get_allocation (widget, &allocation);
+
+ xthickness = style->xthickness;
+ ythickness = style->ythickness;
+
+ layout = gtk_shruler_get_layout (widget, "0123456789");
+ pango_layout_get_extents (layout, &ink_rect, &logical_rect);
+
+ digit_height = PANGO_PIXELS (ink_rect.height) + 2;
+ digit_offset = ink_rect.y;
+
+ if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ width = allocation.width;
+ height = allocation.height - ythickness * 2;
+ }
+ else
+ {
+ width = allocation.height;
+ height = allocation.width - ythickness * 2;
+ }
+
+ cr = cairo_create (priv->backing_store);
+ gdk_cairo_set_source_color (cr, &style->bg[state]);
+
+ cairo_paint (cr);
+
+ gdk_cairo_set_source_color (cr, &style->fg[state]);
+
+ gtk_shruler_get_range (ruler, &lower, &upper, &max_size);
+
+ if ((upper - lower) == 0)
+ goto out;
+
+ increment = (gdouble) width / (upper - lower);
+
+ /* determine the scale
+ * use the maximum extents of the ruler to determine the largest
+ * possible number to be displayed. Calculate the height in pixels
+ * of this displayed text. Use this height to find a scale which
+ * leaves sufficient room for drawing the ruler.
+ *
+ * We calculate the text size as for the vruler instead of
+ * actually measuring the text width, so that the result for the
+ * scale looks consistent with an accompanying vruler.
+ */
+ scale = ceil (max_size);
+ g_snprintf (unit_str, sizeof (unit_str), "%d", scale);
+ text_size = strlen (unit_str) * digit_height + 1;
+
+ for (scale = 0; scale < G_N_ELEMENTS (ruler_metric.ruler_scale); scale++)
+ if (ruler_metric.ruler_scale[scale] * fabs (increment) > 2 * text_size)
+ break;
+
+ if (scale == G_N_ELEMENTS (ruler_metric.ruler_scale))
+ scale = G_N_ELEMENTS (ruler_metric.ruler_scale) - 1;
+
+ unit = gtk_shruler_get_unit (ruler);
+
+ /* drawing starts here */
+ length = 0;
+ for (i = G_N_ELEMENTS (ruler_metric.subdivide) - 1; i >= 0; i--)
+ {
+ gdouble subd_incr;
+
+ /* hack to get proper subdivisions at full pixels */
+ if (unit == CM_UNIT_PIXEL && scale == 1 && i == 1)
+ subd_incr = 1.0;
+ else
+ subd_incr = ((gdouble) ruler_metric.ruler_scale[scale] /
+ (gdouble) ruler_metric.subdivide[i]);
+
+ if (subd_incr * fabs (increment) <= MINIMUM_INCR)
+ continue;
+
+ /* don't subdivide pixels */
+ if (unit == CM_UNIT_PIXEL && subd_incr < 1.0)
+ continue;
+
+ if (lower < upper)
+ {
+ start = floor (lower / subd_incr) * subd_incr;
+ end = ceil (upper / subd_incr) * subd_incr;
+ }
+ else
+ {
+ start = floor (upper / subd_incr) * subd_incr;
+ end = ceil (lower / subd_incr) * subd_incr;
+ }
+
+ for (cur = start; cur <= end; cur += subd_incr)
+ {
+ if (((int)cur) % 10 == 0)
+ length = height * 2 / 3;
+ else if (((int)cur) % 5 == 0)
+ length = height / 3;
+ else
+ length = height / 4;
+
+ pos = ROUND ((cur - lower) * increment);
+
+ if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ cairo_rectangle (cr,
+ pos, height + ythickness - length,
+ 1, length);
+ }
+ else
+ {
+ cairo_rectangle (cr,
+ height + xthickness - length, pos,
+ length, 1);
+ }
+
+ /* draw label */
+ if (i == 0 && ((int)cur) % 10 == 0)
+ {
+ g_snprintf (unit_str, sizeof (unit_str), "%d", (int) cur);
+
+ if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ pango_layout_set_text (layout, unit_str, -1);
+ pango_layout_get_extents (layout, &logical_rect, NULL);
+
+ cairo_move_to (cr,
+ pos + 2,
+ ythickness + PANGO_PIXELS (logical_rect.y - digit_offset));
+ pango_cairo_show_layout (cr, layout);
+ }
+ else
+ {
+ gint j;
+
+ for (j = 0; j < (int) strlen (unit_str); j++)
+ {
+ pango_layout_set_text (layout, unit_str + j, 1);
+ pango_layout_get_extents (layout, NULL, &logical_rect);
+
+ cairo_move_to (cr,
+ xthickness + 1,
+ pos + digit_height * j + 2 + PANGO_PIXELS (logical_rect.y - digit_offset));
+ pango_cairo_show_layout (cr, layout);
+ }
+ }
+ }
+ }
+ }
+
+ cairo_fill (cr);
+out:
+ cairo_destroy (cr);
}
static void
-gtk_shruler_draw_ticks(GtkRuler *ruler)
-{
- GtkWidget *widget;
- cairo_t *cr;
- gint i;
- gint width, height;
- gint xthickness;
- gint ythickness;
- gint pos;
-
- cm_return_if_fail (ruler != NULL);
- cm_return_if_fail (GTK_IS_HRULER (ruler));
-
- if (!gtkut_widget_is_drawable (GTK_WIDGET(ruler)))
- return;
-
- widget = GTK_WIDGET (ruler);
-
- cr = gdk_cairo_create(ruler->backing_store);
- cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
- cairo_set_line_width(cr, 1.);
- gdk_cairo_set_source_color(cr, >k_widget_get_style(widget)->text[GTK_STATE_NORMAL]);
-
- xthickness = widget->style->xthickness;
- ythickness = widget->style->ythickness;
-
- width = widget->allocation.width;
- height = widget->allocation.height - ythickness * 2;
-
- gtk_paint_box (widget->style, ruler->backing_store,
- GTK_STATE_NORMAL, GTK_SHADOW_OUT,
- NULL, widget, "hruler",
- 0, 0,
- widget->allocation.width, widget->allocation.height);
-
- /* assume ruler->max_size has the char width */
- /* i is increment of char_width, pos is label number
- * y position is based on height of widget itself */
- for ( i = 0, pos = 0; i < widget->allocation.width - xthickness; i += ruler->max_size, pos++ ) {
- gint length = height / 8;
-
- if ( pos % 10 == 0 ) length = ( 2 * height / 3 );
- else if ( pos % 5 == 0 ) length = ( height / 3 );
-
- cairo_move_to(cr, i, height + ythickness);
- cairo_line_to(cr, i, height - length);
- cairo_stroke(cr);
-
- if ( pos % 10 == 0 ) {
- gchar buf[8];
- PangoLayout *layout;
-
- /* draw label */
- g_snprintf(buf, sizeof buf, "%d", pos);
-
- layout = gtk_widget_create_pango_layout
- (GTK_WIDGET(ruler), buf);
-
- cairo_move_to(cr, i+2, 0);
- pango_cairo_show_layout(cr, layout);
-
- g_object_unref(layout);
- }
- }
-
- cairo_destroy(cr);
+gtk_shruler_make_pixmap (GtkSHRuler *ruler)
+{
+ GtkWidget *widget = GTK_WIDGET (ruler);
+ GtkSHRulerPrivate *priv = GTK_SHRULER_GET_PRIVATE (ruler);
+ GtkAllocation allocation;
+
+ gtk_widget_get_allocation (widget, &allocation);
+
+ if (priv->backing_store)
+ cairo_surface_destroy (priv->backing_store);
+
+ priv->backing_store =
+ gdk_window_create_similar_surface (gtk_widget_get_window (widget),
+ CAIRO_CONTENT_COLOR,
+ allocation.width,
+ allocation.height);
+}
+
+
+static PangoLayout *
+gtk_shruler_create_layout (GtkWidget *widget,
+ const gchar *text)
+{
+ GtkSHRulerPrivate *priv = GTK_SHRULER_GET_PRIVATE (widget);
+ PangoLayout *layout;
+ PangoAttrList *attrs;
+ PangoAttribute *attr;
+
+ layout = gtk_widget_create_pango_layout (widget, text);
+
+ attrs = pango_attr_list_new ();
+
+ attr = pango_attr_scale_new (priv->font_scale);
+ attr->start_index = 0;
+ attr->end_index = -1;
+ pango_attr_list_insert (attrs, attr);
+
+ pango_layout_set_attributes (layout, attrs);
+ pango_attr_list_unref (attrs);
+
+ return layout;
+}
+
+static PangoLayout *
+gtk_shruler_get_layout (GtkWidget *widget,
+ const gchar *text)
+{
+ GtkSHRulerPrivate *priv = GTK_SHRULER_GET_PRIVATE (widget);
+
+ if (priv->layout)
+ {
+ pango_layout_set_text (priv->layout, text, -1);
+ return priv->layout;
+ }
+
+ priv->layout = gtk_shruler_create_layout (widget, text);
+
+ return priv->layout;
}
projects / claws.git / blobdiff