/* GTK - The GIMP Toolkit
- * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ * Copyright (C) 2001 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
+ * 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
- * 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, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Lesser 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 "gtkvscale.h"
-#include "gtksignal.h"
-#include "gdk/gdkkeysyms.h"
-
-
-#define SCALE_CLASS(w) GTK_SCALE_CLASS (GTK_OBJECT (w)->klass)
-#define RANGE_CLASS(w) GTK_RANGE_CLASS (GTK_OBJECT (w)->klass)
+/*
+ * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
+ * file for a list of people on the GTK+ Team. See the ChangeLog
+ * files for a list of changes. These files are distributed with
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
+ */
-static void gtk_vscale_class_init (GtkVScaleClass *klass);
-static void gtk_vscale_init (GtkVScale *vscale);
-static void gtk_vscale_realize (GtkWidget *widget);
-static void gtk_vscale_size_request (GtkWidget *widget,
- GtkRequisition *requisition);
-static void gtk_vscale_size_allocate (GtkWidget *widget,
- GtkAllocation *allocation);
-static void gtk_vscale_pos_trough (GtkVScale *vscale,
- gint *x,
- gint *y,
- gint *w,
- gint *h);
-static void gtk_vscale_draw_slider (GtkRange *range);
-static void gtk_vscale_draw_value (GtkScale *scale);
-static gint gtk_vscale_trough_keys (GtkRange *range,
- GdkEventKey *key,
- GtkScrollType *scroll,
- GtkTroughType *pos);
+#include "config.h"
+#include <math.h>
+#include <stdlib.h>
-guint
-gtk_vscale_get_type ()
-{
- static guint vscale_type = 0;
+#include "gtkvscale.h"
+#include "gtkorientable.h"
- if (!vscale_type)
- {
- GtkTypeInfo vscale_info =
- {
- "GtkVScale",
- sizeof (GtkVScale),
- sizeof (GtkVScaleClass),
- (GtkClassInitFunc) gtk_vscale_class_init,
- (GtkObjectInitFunc) gtk_vscale_init,
- (GtkArgSetFunc) NULL,
- (GtkArgGetFunc) NULL,
- };
- vscale_type = gtk_type_unique (gtk_scale_get_type (), &vscale_info);
- }
+/**
+ * SECTION:gtkvscale
+ * @Short_description: A vertical slider widget for selecting a value from a range
+ * @Title: GtkVScale
+ *
+ * The #GtkVScale widget is used to allow the user to select a value using
+ * a vertical slider. To create one, use gtk_hscale_new_with_range().
+ *
+ * The position to show the current value, and the number of decimal places
+ * shown can be set using the parent #GtkScale class's functions.
+ */
- return vscale_type;
-}
+G_DEFINE_TYPE (GtkVScale, gtk_vscale, GTK_TYPE_SCALE)
static void
gtk_vscale_class_init (GtkVScaleClass *class)
{
- GtkWidgetClass *widget_class;
- GtkRangeClass *range_class;
- GtkScaleClass *scale_class;
-
- widget_class = (GtkWidgetClass*) class;
- range_class = (GtkRangeClass*) class;
- scale_class = (GtkScaleClass*) class;
+ GtkRangeClass *range_class = GTK_RANGE_CLASS (class);
- widget_class->realize = gtk_vscale_realize;
- widget_class->size_request = gtk_vscale_size_request;
- widget_class->size_allocate = gtk_vscale_size_allocate;
-
- range_class->slider_update = gtk_range_default_vslider_update;
- range_class->trough_click = gtk_range_default_vtrough_click;
- range_class->motion = gtk_range_default_vmotion;
- range_class->draw_slider = gtk_vscale_draw_slider;
- range_class->trough_keys = gtk_vscale_trough_keys;
-
- scale_class->draw_value = gtk_vscale_draw_value;
+ range_class->slider_detail = "vscale";
}
static void
gtk_vscale_init (GtkVScale *vscale)
{
+ gtk_orientable_set_orientation (GTK_ORIENTABLE (vscale),
+ GTK_ORIENTATION_VERTICAL);
}
-
-GtkWidget*
+/**
+ * gtk_vscale_new:
+ * @adjustment: the #GtkAdjustment which sets the range of the scale.
+ *
+ * Creates a new #GtkVScale.
+ *
+ * Returns: a new #GtkVScale.
+ */
+GtkWidget *
gtk_vscale_new (GtkAdjustment *adjustment)
{
- GtkVScale *vscale;
-
- vscale = gtk_type_new (gtk_vscale_get_type ());
-
- if (!adjustment)
- adjustment = (GtkAdjustment*) gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
-
- gtk_range_set_adjustment (GTK_RANGE (vscale), adjustment);
-
- return GTK_WIDGET (vscale);
-}
-
-
-static void
-gtk_vscale_realize (GtkWidget *widget)
-{
- GtkRange *range;
- GdkWindowAttr attributes;
- gint attributes_mask;
- gint x, y, w, h;
-
- g_return_if_fail (widget != NULL);
- g_return_if_fail (GTK_IS_VSCALE (widget));
-
- GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
- range = GTK_RANGE (widget);
-
- attributes.x = widget->allocation.x;
- attributes.y = widget->allocation.y;
- attributes.width = widget->allocation.width;
- attributes.height = widget->allocation.height;
- attributes.wclass = GDK_INPUT_OUTPUT;
- attributes.window_type = GDK_WINDOW_CHILD;
- attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
- attributes.visual = gtk_widget_get_visual (widget);
- attributes.colormap = gtk_widget_get_colormap (widget);
-
- attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
- widget->window = gdk_window_new (widget->parent->window, &attributes, attributes_mask);
-
- gtk_vscale_pos_trough (GTK_VSCALE (widget), &x, &y, &w, &h);
- attributes.x = x;
- attributes.y = y;
- attributes.width = w;
- attributes.height = h;
- attributes.event_mask |= (GDK_BUTTON_PRESS_MASK |
- GDK_BUTTON_RELEASE_MASK |
- GDK_ENTER_NOTIFY_MASK |
- GDK_LEAVE_NOTIFY_MASK);
-
- range->trough = gdk_window_new (widget->window, &attributes, attributes_mask);
-
- attributes.width = RANGE_CLASS (range)->slider_width;
- attributes.height = SCALE_CLASS (range)->slider_length;
- attributes.event_mask |= (GDK_BUTTON_MOTION_MASK |
- GDK_POINTER_MOTION_HINT_MASK);
-
- range->slider = gdk_window_new (range->trough, &attributes, attributes_mask);
-
- widget->style = gtk_style_attach (widget->style, widget->window);
-
- gdk_window_set_user_data (widget->window, widget);
- gdk_window_set_user_data (range->trough, widget);
- gdk_window_set_user_data (range->slider, widget);
-
- gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
- gtk_style_set_background (widget->style, range->trough, GTK_STATE_ACTIVE);
- gtk_style_set_background (widget->style, range->slider, GTK_STATE_NORMAL);
-
- gtk_range_slider_update (GTK_RANGE (widget));
-
- gdk_window_show (range->slider);
- gdk_window_show (range->trough);
-}
-
-static void
-gtk_vscale_size_request (GtkWidget *widget,
- GtkRequisition *requisition)
-{
- GtkScale *scale;
- gint value_width;
-
- g_return_if_fail (widget != NULL);
- g_return_if_fail (GTK_IS_VSCALE (widget));
- g_return_if_fail (requisition != NULL);
-
- scale = GTK_SCALE (widget);
-
- requisition->width = (RANGE_CLASS (scale)->slider_width +
- widget->style->klass->ythickness * 2);
- requisition->height = (SCALE_CLASS (scale)->slider_length +
- widget->style->klass->xthickness) * 2;
-
- if (scale->draw_value)
- {
- value_width = gtk_scale_value_width (scale);
-
- if ((scale->value_pos == GTK_POS_LEFT) ||
- (scale->value_pos == GTK_POS_RIGHT))
- {
- requisition->width += value_width + SCALE_CLASS (scale)->value_spacing;
- if (requisition->height < (widget->style->font->ascent + widget->style->font->descent))
- requisition->height = widget->style->font->ascent + widget->style->font->descent;
- }
- else if ((scale->value_pos == GTK_POS_TOP) ||
- (scale->value_pos == GTK_POS_BOTTOM))
- {
- if (requisition->width < value_width)
- requisition->width = value_width;
- requisition->height += widget->style->font->ascent + widget->style->font->descent;
- }
- }
-}
-
-static void
-gtk_vscale_size_allocate (GtkWidget *widget,
- GtkAllocation *allocation)
-{
- GtkRange *range;
- GtkScale *scale;
- gint width, height;
- gint x, y;
-
- g_return_if_fail (widget != NULL);
- g_return_if_fail (GTK_IS_VSCALE (widget));
- g_return_if_fail (allocation != NULL);
-
- widget->allocation = *allocation;
- if (GTK_WIDGET_REALIZED (widget))
- {
- range = GTK_RANGE (widget);
- scale = GTK_SCALE (widget);
-
- gdk_window_move_resize (widget->window,
- allocation->x, allocation->y,
- allocation->width, allocation->height);
-
- gtk_vscale_pos_trough (GTK_VSCALE (widget), &x, &y, &width, &height);
+ g_return_val_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment),
+ NULL);
- gdk_window_move_resize (range->trough, x, y, width, height);
- gtk_range_slider_update (GTK_RANGE (widget));
- }
+ return g_object_new (GTK_TYPE_VSCALE,
+ "adjustment", adjustment,
+ NULL);
}
-static void
-gtk_vscale_pos_trough (GtkVScale *vscale,
- gint *x,
- gint *y,
- gint *w,
- gint *h)
+/**
+ * gtk_vscale_new_with_range:
+ * @min: minimum value
+ * @max: maximum value
+ * @step: step increment (tick size) used with keyboard shortcuts
+ *
+ * Creates a new vertical scale widget that lets the user input a
+ * number between @min and @max (including @min and @max) with the
+ * increment @step. @step must be nonzero; it's the distance the
+ * slider moves when using the arrow keys to adjust the scale value.
+ *
+ * Note that the way in which the precision is derived works best if @step
+ * is a power of ten. If the resulting precision is not suitable for your
+ * needs, use gtk_scale_set_digits() to correct it.
+ *
+ * Return value: a new #GtkVScale
+ **/
+GtkWidget *
+gtk_vscale_new_with_range (gdouble min,
+ gdouble max,
+ gdouble step)
{
- GtkWidget *widget;
+ GtkAdjustment *adj;
GtkScale *scale;
+ gint digits;
- g_return_if_fail (vscale != NULL);
- g_return_if_fail (GTK_IS_VSCALE (vscale));
- g_return_if_fail ((x != NULL) && (y != NULL) && (w != NULL) && (h != NULL));
-
- widget = GTK_WIDGET (vscale);
- scale = GTK_SCALE (vscale);
+ g_return_val_if_fail (min < max, NULL);
+ g_return_val_if_fail (step != 0.0, NULL);
- *w = (RANGE_CLASS (scale)->slider_width +
- widget->style->klass->xthickness * 2);
- *h = widget->allocation.height;
+ adj = gtk_adjustment_new (min, min, max, step, 10 * step, 0);
- if (scale->draw_value)
+ if (fabs (step) >= 1.0 || step == 0.0)
{
- *x = 0;
- *y = 0;
-
- switch (scale->value_pos)
- {
- case GTK_POS_LEFT:
- *x = (gtk_scale_value_width (scale) +
- (widget->allocation.width - widget->requisition.width) / 2);
- break;
- case GTK_POS_RIGHT:
- *x = (widget->allocation.width - widget->requisition.width) / 2;
- break;
- case GTK_POS_TOP:
- *x = (widget->allocation.width - *w) / 2;
- *y = widget->style->font->ascent + widget->style->font->descent;
- *h -= *y;
- break;
- case GTK_POS_BOTTOM:
- *x = (widget->allocation.width - *w) / 2;
- *h -= widget->style->font->ascent + widget->style->font->descent;
- break;
- }
+ digits = 0;
}
else
{
- *x = (widget->allocation.width - *w) / 2;
- *y = 0;
- }
- *y += 1;
- *h -= 2;
-}
-
-static void
-gtk_vscale_draw_slider (GtkRange *range)
-{
- GtkStateType state_type;
- gint width, height;
-
- g_return_if_fail (range != NULL);
- g_return_if_fail (GTK_IS_VSCALE (range));
-
- if (range->slider)
- {
- if ((range->in_child == RANGE_CLASS (range)->slider) ||
- (range->click_child == RANGE_CLASS (range)->slider))
- state_type = GTK_STATE_PRELIGHT;
- else
- state_type = GTK_STATE_NORMAL;
-
- gtk_style_set_background (GTK_WIDGET (range)->style, range->slider, state_type);
- gdk_window_clear (range->slider);
-
- gdk_window_get_size (range->slider, &width, &height);
- gtk_draw_hline (GTK_WIDGET (range)->style, range->slider,
- state_type, 1, width - 2, height / 2);
-
- gtk_draw_shadow (GTK_WIDGET (range)->style, range->slider,
- state_type, GTK_SHADOW_OUT,
- 0, 0, -1, -1);
+ digits = abs ((gint) floor (log10 (fabs (step))));
+ if (digits > 5)
+ digits = 5;
}
-}
-
-static void
-gtk_vscale_draw_value (GtkScale *scale)
-{
- GtkStateType state_type;
- gchar buffer[16];
- gint text_width;
- gint width, height;
- gint x, y;
-
- g_return_if_fail (scale != NULL);
- g_return_if_fail (GTK_IS_VSCALE (scale));
-
- if (scale->draw_value)
- {
- gdk_window_get_size (GTK_WIDGET (scale)->window, &width, &height);
- gdk_window_clear_area (GTK_WIDGET (scale)->window, 1, 1, width - 3, height - 3);
- sprintf (buffer, "%0.*f", GTK_RANGE (scale)->digits, GTK_RANGE (scale)->adjustment->value);
- text_width = gdk_string_measure (GTK_WIDGET (scale)->style->font, buffer);
+ scale = g_object_new (GTK_TYPE_VSCALE,
+ "adjustment", adj,
+ "digits", digits,
+ NULL);
- switch (scale->value_pos)
- {
- case GTK_POS_LEFT:
- gdk_window_get_position (GTK_RANGE (scale)->trough, &x, NULL);
- gdk_window_get_position (GTK_RANGE (scale)->slider, NULL, &y);
- gdk_window_get_size (GTK_RANGE (scale)->trough, &width, NULL);
- gdk_window_get_size (GTK_RANGE (scale)->slider, NULL, &height);
-
- x -= SCALE_CLASS (scale)->value_spacing + text_width;
- y += ((height -
- (GTK_WIDGET (scale)->style->font->ascent +
- GTK_WIDGET (scale)->style->font->descent)) / 2 +
- GTK_WIDGET (scale)->style->font->ascent);
- break;
- case GTK_POS_RIGHT:
- gdk_window_get_position (GTK_RANGE (scale)->trough, &x, NULL);
- gdk_window_get_position (GTK_RANGE (scale)->slider, NULL, &y);
- gdk_window_get_size (GTK_RANGE (scale)->trough, &width, NULL);
- gdk_window_get_size (GTK_RANGE (scale)->slider, NULL, &height);
-
- x += width + SCALE_CLASS (scale)->value_spacing;
- y += ((height -
- (GTK_WIDGET (scale)->style->font->ascent +
- GTK_WIDGET (scale)->style->font->descent)) / 2 +
- GTK_WIDGET (scale)->style->font->ascent);
- break;
- case GTK_POS_TOP:
- gdk_window_get_position (GTK_RANGE (scale)->trough, &x, &y);
- gdk_window_get_size (GTK_RANGE (scale)->slider, &width, NULL);
- gdk_window_get_size (GTK_RANGE (scale)->trough, NULL, &height);
-
- x += (width - text_width) / 2;
- y -= GTK_WIDGET (scale)->style->font->descent;
- break;
- case GTK_POS_BOTTOM:
- gdk_window_get_position (GTK_RANGE (scale)->trough, &x, &y);
- gdk_window_get_size (GTK_RANGE (scale)->slider, &width, NULL);
- gdk_window_get_size (GTK_RANGE (scale)->trough, NULL, &height);
-
- x += (width - text_width) / 2;
- y += height + GTK_WIDGET (scale)->style->font->ascent;
- break;
- }
-
- state_type = GTK_STATE_NORMAL;
- if (!GTK_WIDGET_IS_SENSITIVE (scale))
- state_type = GTK_STATE_INSENSITIVE;
-
- gtk_draw_string (GTK_WIDGET (scale)->style,
- GTK_WIDGET (scale)->window,
- state_type, x, y, buffer);
- }
-}
-
-static gint
-gtk_vscale_trough_keys(GtkRange *range,
- GdkEventKey *key,
- GtkScrollType *scroll,
- GtkTroughType *pos)
-{
- gint return_val = FALSE;
- switch (key->keyval)
- {
- case GDK_Up:
- return_val = TRUE;
- *scroll = GTK_SCROLL_STEP_BACKWARD;
- break;
- case GDK_Down:
- return_val = TRUE;
- *scroll = GTK_SCROLL_STEP_FORWARD;
- break;
- case GDK_Page_Up:
- return_val = TRUE;
- *scroll = GTK_SCROLL_PAGE_BACKWARD;
- break;
- case GDK_Page_Down:
- return_val = TRUE;
- *scroll = GTK_SCROLL_PAGE_FORWARD;
- break;
- case GDK_Home:
- return_val = TRUE;
- *pos = GTK_TROUGH_START;
- break;
- case GDK_End:
- return_val = TRUE;
- *pos = GTK_TROUGH_END;
- break;
- }
- return return_val;
+ return GTK_WIDGET (scale);
}
projects / ~andy / gtk / blobdiff