771 lines
23 KiB
C
771 lines
23 KiB
C
/* -*- mode: c; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/*
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* gcal-arrow-bin.c
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* Copyright (C) 2012 Erick Pérez Castellanos <erickpc@gnome.org>
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*
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* gnome-calendar is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* gnome-calendar is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "gcal-arrow-bin.h"
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struct _GPoint
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{
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gdouble x;
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gdouble y;
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};
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typedef struct _GPoint GPoint;
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typedef struct
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{
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GtkPositionType arrow_position;
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gdouble arrow_align;
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} GcalArrowBinPrivate;
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enum
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{
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PROP_0,
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PROP_ARROW_POSITION,
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PROP_ARROW_ALIGN
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};
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static void get_padding_and_border (GtkWidget *widget,
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GtkBorder *border,
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guint *arrow_size);
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static void draw_arrow (GtkWidget *widget,
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cairo_t *cr);
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static void gcal_arrow_bin_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gcal_arrow_bin_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec);
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static void gcal_arrow_bin_get_preferred_width (GtkWidget *widget,
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gint *minimum_width,
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gint *natural_width);
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static void gcal_arrow_bin_get_preferred_height_for_width (GtkWidget *widget,
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gint width,
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gint *minimum_height,
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gint *natural_height);
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static void gcal_arrow_bin_get_preferred_height (GtkWidget *widget,
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gint *minimum_height,
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gint *natural_height);
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static void gcal_arrow_bin_get_preferred_width_for_height (GtkWidget *widget,
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gint height,
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gint *minimum_width,
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gint *natural_width);
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static void gcal_arrow_bin_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation);
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static gboolean gcal_arrow_bin_draw (GtkWidget *widget,
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cairo_t *cr);
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G_DEFINE_TYPE_WITH_PRIVATE (GcalArrowBin, gcal_arrow_bin, GTK_TYPE_BIN)
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static void
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get_padding_and_border (GtkWidget *widget,
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GtkBorder *border,
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guint *arrow_size)
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{
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GtkBorder tmp;
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if (border != NULL)
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{
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guint bw = gtk_container_get_border_width (GTK_CONTAINER (widget));
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gtk_style_context_get_padding (gtk_widget_get_style_context (widget),
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gtk_widget_get_state_flags (widget),
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border);
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gtk_style_context_get_border (gtk_widget_get_style_context (widget),
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gtk_widget_get_state_flags (widget),
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&tmp);
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border->top += tmp.top + bw;
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border->right += tmp.right + bw;
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border->bottom += tmp.bottom + bw;
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border->left += tmp.left + bw;
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}
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if (arrow_size != NULL)
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{
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gtk_style_context_get_style (
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gtk_widget_get_style_context (widget),
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"arrow-size", arrow_size,
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NULL);
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}
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}
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static void
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draw_arrow (GtkWidget *widget,
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cairo_t *cr)
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{
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GcalArrowBinPrivate *priv;
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GdkRGBA color;
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GtkBorder border;
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guint arrow_size;
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gdouble selected_border;
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gint selected_border_radius;
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guint width;
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guint height;
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guint bw;
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gdouble arrow_start_point;
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GPoint p0 = { 0, 0 };
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GPoint p1 = { 0, 0 };
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GPoint p2 = { 0, 0 };
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GPoint p3 = { 0, 0 };
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GPoint p4 = { 0, 0 };
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priv = gcal_arrow_bin_get_instance_private (GCAL_ARROW_BIN (widget));
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gtk_style_context_get_border (gtk_widget_get_style_context (widget),
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gtk_widget_get_state_flags (widget),
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&border);
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gtk_style_context_get (gtk_widget_get_style_context (widget),
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gtk_widget_get_state_flags (widget),
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"border-radius", &selected_border_radius,
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NULL);
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gtk_style_context_get_style (gtk_widget_get_style_context (widget),
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"arrow-size", &arrow_size, NULL);
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bw = gtk_container_get_border_width (GTK_CONTAINER (widget));
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width = gtk_widget_get_allocated_width (widget) - (border.left + border.right + 2 * bw);
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height = gtk_widget_get_allocated_height (widget) - (border.top + border.bottom + 2 * bw);
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selected_border = bw;
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switch (priv->arrow_position)
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{
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case GTK_POS_TOP:
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selected_border += border.top;
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break;
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case GTK_POS_BOTTOM:
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selected_border += border.bottom;
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break;
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case GTK_POS_LEFT:
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selected_border += border.left;
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break;
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case GTK_POS_RIGHT:
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selected_border += border.right;
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break;
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}
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if (priv->arrow_position == GTK_POS_LEFT ||
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priv->arrow_position == GTK_POS_RIGHT)
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{
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width -= arrow_size;
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arrow_start_point = arrow_size + selected_border / 2 + selected_border_radius +
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(height - 2 * (arrow_size + selected_border / 2 + selected_border_radius)) * priv->arrow_align;
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}
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else
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{
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height -= arrow_size;
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arrow_start_point = arrow_size + selected_border / 2 + selected_border_radius +
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(width - 2 * (arrow_size + selected_border / 2 + selected_border_radius)) * priv->arrow_align;
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}
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p0.x = p0.y = bw;
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switch (priv->arrow_position)
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{
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case GTK_POS_TOP:
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p0.x += arrow_start_point - arrow_size;
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p0.y += border.top + arrow_size;
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p1.x = p0.x;
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p1.y = p0.y - border.top;
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p2.x = p1.x + arrow_size;
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p2.y = p1.y - arrow_size;
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p3.x = p2.x + arrow_size;
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p3.y = p1.y;
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p4.x = p3.x;
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p4.y = p0.y;
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break;
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case GTK_POS_BOTTOM:
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p0.x += arrow_start_point - arrow_size;
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p0.y += height - border.bottom;
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p1.x = p0.x;
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p1.y = p0.y + border.bottom;
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p2.x = p1.x + arrow_size;
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p2.y = p1.y + arrow_size;
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p3.x = p2.x + arrow_size;
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p3.y = p1.y;
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p4.x = p3.x;
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p4.y = p0.y;
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break;
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case GTK_POS_LEFT:
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p0.x += arrow_size + border.left;
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p0.y += arrow_start_point - arrow_size;
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p1.x = p0.x - border.left;
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p1.y = p0.y;
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p2.x = p1.x - arrow_size;
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p2.y = p1.y + arrow_size;
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p3.x = p1.x;
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p3.y = p2.y + arrow_size;
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p4.x = p0.x;
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p4.y = p3.y;
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break;
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case GTK_POS_RIGHT:
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p0.x += width - border.left;
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p0.y += arrow_start_point - arrow_size;
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p1.x = p0.x + border.left;
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p1.y = p0.y;
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p2.x = p1.x + arrow_size;
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p2.y = p1.y + arrow_size;
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p3.x = p1.x;
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p3.y = p2.y + arrow_size;
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p4.x = p0.x;
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p4.y = p3.y;
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break;
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}
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cairo_save (cr);
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cairo_set_line_width (cr, border.bottom);
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cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
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cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
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cairo_move_to (cr, p0.x, p0.y);
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cairo_line_to (cr, p1.x, p1.y);
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cairo_line_to (cr, p2.x, p2.y);
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cairo_line_to (cr, p3.x, p3.y);
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cairo_line_to (cr, p4.x, p4.y);
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gtk_style_context_get_background_color (
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gtk_widget_get_style_context (widget),
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gtk_widget_get_state_flags (widget),
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&color);
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cairo_set_source_rgba (cr, color.red, color.green, color.blue, color.alpha);
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cairo_fill (cr);
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cairo_move_to (cr, p1.x, p1.y);
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cairo_line_to (cr, p2.x, p2.y);
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cairo_line_to (cr, p3.x, p3.y);
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gtk_style_context_get_border_color (
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gtk_widget_get_style_context (widget),
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gtk_widget_get_state_flags (widget),
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&color);
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cairo_set_source_rgb (cr, color.red, color.green, color.blue);
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cairo_stroke (cr);
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cairo_restore (cr);
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}
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static void
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gcal_arrow_bin_class_init (GcalArrowBinClass *klass)
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{
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GObjectClass *object_class;
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GtkWidgetClass* widget_class;
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object_class = G_OBJECT_CLASS (klass);
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widget_class = GTK_WIDGET_CLASS (klass);
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object_class->set_property = gcal_arrow_bin_set_property;
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object_class->get_property = gcal_arrow_bin_get_property;
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widget_class->get_preferred_width =
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gcal_arrow_bin_get_preferred_width;
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widget_class->get_preferred_height_for_width =
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gcal_arrow_bin_get_preferred_height_for_width;
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widget_class->get_preferred_height =
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gcal_arrow_bin_get_preferred_height;
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widget_class->get_preferred_width_for_height =
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gcal_arrow_bin_get_preferred_width_for_height;
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widget_class->size_allocate = gcal_arrow_bin_size_allocate;
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widget_class->draw = gcal_arrow_bin_draw;
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/* Properties */
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g_object_class_install_property (
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object_class,
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PROP_ARROW_POSITION,
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g_param_spec_enum ("arrow-position",
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"Arrow position",
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"The position of the arrow in the container",
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GTK_TYPE_POSITION_TYPE,
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GTK_POS_BOTTOM,
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G_PARAM_CONSTRUCT |
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G_PARAM_READWRITE |
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G_PARAM_STATIC_NAME |
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G_PARAM_STATIC_NICK |
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G_PARAM_STATIC_BLURB));
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g_object_class_install_property (
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object_class,
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PROP_ARROW_ALIGN,
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g_param_spec_double ("arrow-align",
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"Arrow alignment",
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"The alignment of the arrow in its side",
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0.0,
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1.0,
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0.5,
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G_PARAM_CONSTRUCT |
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G_PARAM_READWRITE |
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G_PARAM_STATIC_NAME |
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G_PARAM_STATIC_NICK |
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G_PARAM_STATIC_BLURB));
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/* Style properties */
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gtk_widget_class_install_style_property (
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widget_class,
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g_param_spec_uint ("arrow-size",
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"Arrow width and height",
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"The width and height of the arrow",
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0,
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G_MAXUINT32,
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0,
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G_PARAM_READABLE));
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}
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static void
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gcal_arrow_bin_init (GcalArrowBin *self)
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{
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gtk_widget_set_has_window (GTK_WIDGET (self), FALSE);
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}
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static void
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gcal_arrow_bin_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GcalArrowBinPrivate *priv;
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priv = gcal_arrow_bin_get_instance_private (GCAL_ARROW_BIN (object));
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switch (property_id)
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{
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case PROP_ARROW_POSITION:
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priv->arrow_position = g_value_get_enum (value);
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break;
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case PROP_ARROW_ALIGN:
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priv->arrow_align = g_value_get_double (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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return;
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}
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}
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static void
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gcal_arrow_bin_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GcalArrowBinPrivate *priv;
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priv = gcal_arrow_bin_get_instance_private (GCAL_ARROW_BIN (object));
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switch (property_id)
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{
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case PROP_ARROW_POSITION:
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g_value_set_enum (value, priv->arrow_position);
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break;
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case PROP_ARROW_ALIGN:
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g_value_set_double (value, priv->arrow_align);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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return;
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}
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}
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static void
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gcal_arrow_bin_get_preferred_width (GtkWidget *widget,
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gint *minimum_width,
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gint *natural_width)
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{
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GcalArrowBinPrivate *priv;
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gint child_min, child_nat;
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GtkWidget *child;
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GtkBorder padding;
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gint minimum, natural;
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guint arrow_size;
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priv = gcal_arrow_bin_get_instance_private (GCAL_ARROW_BIN (widget));
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get_padding_and_border (widget, &padding, &arrow_size);
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minimum = 0;
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natural = 0;
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child = gtk_bin_get_child (GTK_BIN (widget));
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if (child && gtk_widget_get_visible (child))
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{
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gtk_widget_get_preferred_width (child,
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&child_min,
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&child_nat);
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minimum += child_min;
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natural += child_nat;
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}
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minimum += padding.left + padding.right;
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natural += padding.left + padding.right;
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if (priv->arrow_position == GTK_POS_LEFT ||
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priv->arrow_position == GTK_POS_RIGHT)
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{
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minimum += arrow_size;
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natural += arrow_size;
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}
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if (minimum_width)
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*minimum_width = minimum;
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if (natural_width)
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*natural_width = natural;
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}
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static void
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gcal_arrow_bin_get_preferred_height_for_width (GtkWidget *widget,
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gint width,
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gint *minimum_height,
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gint *natural_height)
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{
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GcalArrowBinPrivate *priv;
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gint child_min, child_nat, child_width;
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GtkWidget *child;
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GtkBorder padding;
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guint arrow_size;
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gint minimum;
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gint natural;
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priv = gcal_arrow_bin_get_instance_private (GCAL_ARROW_BIN (widget));
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get_padding_and_border (widget, &padding, &arrow_size);
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minimum = 0;
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natural = 0;
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child = gtk_bin_get_child (GTK_BIN (widget));
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if (child && gtk_widget_get_visible (child))
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{
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child_width = width - (padding.left + padding.right);
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gtk_widget_get_preferred_height_for_width (child,
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child_width,
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&child_min,
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&child_nat);
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minimum = MAX (minimum, child_min);
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natural = MAX (natural, child_nat);
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}
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minimum += padding.top + padding.bottom;
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natural += padding.top + padding.bottom;
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if (priv->arrow_position == GTK_POS_TOP ||
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priv->arrow_position == GTK_POS_BOTTOM)
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{
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minimum += arrow_size;
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natural += arrow_size;
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}
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if (minimum_height)
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*minimum_height = minimum;
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if (natural_height)
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*natural_height = natural;
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}
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static void
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gcal_arrow_bin_get_preferred_height (GtkWidget *widget,
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gint *minimum_height,
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gint *natural_height)
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{
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GcalArrowBinPrivate *priv;
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gint child_min, child_nat;
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GtkWidget *child;
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GtkBorder padding;
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guint arrow_size;
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gint minimum;
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gint natural;
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priv = gcal_arrow_bin_get_instance_private (GCAL_ARROW_BIN (widget));
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get_padding_and_border (widget, &padding, &arrow_size);
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minimum = 0;
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natural = 0;
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child = gtk_bin_get_child (GTK_BIN (widget));
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if (child && gtk_widget_get_visible (child))
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{
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gtk_widget_get_preferred_height (child,
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&child_min,
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&child_nat);
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minimum = child_min;
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natural = child_nat;
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}
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minimum += padding.top + padding.bottom;
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natural += padding.top + padding.bottom;
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if (priv->arrow_position == GTK_POS_TOP ||
|
|
priv->arrow_position == GTK_POS_BOTTOM)
|
|
{
|
|
minimum += arrow_size;
|
|
natural += arrow_size;
|
|
}
|
|
|
|
if (minimum_height)
|
|
*minimum_height = minimum;
|
|
|
|
if (natural_height)
|
|
*natural_height = natural;
|
|
}
|
|
|
|
static void
|
|
gcal_arrow_bin_get_preferred_width_for_height (GtkWidget *widget,
|
|
gint height,
|
|
gint *minimum_width,
|
|
gint *natural_width)
|
|
{
|
|
GcalArrowBinPrivate *priv;
|
|
|
|
gint child_min, child_nat, child_height;
|
|
GtkWidget *child;
|
|
GtkBorder padding;
|
|
guint arrow_size;
|
|
gint minimum;
|
|
gint natural;
|
|
|
|
priv = gcal_arrow_bin_get_instance_private (GCAL_ARROW_BIN (widget));
|
|
|
|
get_padding_and_border (widget, &padding, &arrow_size);
|
|
|
|
minimum = 0;
|
|
natural = 0;
|
|
|
|
child_height = height - (padding.top + padding.bottom);
|
|
|
|
child = gtk_bin_get_child (GTK_BIN (widget));
|
|
if (child && gtk_widget_get_visible (child))
|
|
{
|
|
gtk_widget_get_preferred_width_for_height (child,
|
|
child_height,
|
|
&child_min,
|
|
&child_nat);
|
|
minimum += child_min;
|
|
natural += child_nat;
|
|
}
|
|
|
|
minimum += padding.left + padding.right;
|
|
natural += padding.left + padding.right;
|
|
|
|
if (priv->arrow_position == GTK_POS_LEFT ||
|
|
priv->arrow_position == GTK_POS_RIGHT)
|
|
{
|
|
minimum += arrow_size;
|
|
natural += arrow_size;
|
|
}
|
|
|
|
if (minimum_width)
|
|
*minimum_width = minimum;
|
|
|
|
if (natural_width)
|
|
*natural_width = natural;
|
|
}
|
|
|
|
static void
|
|
gcal_arrow_bin_size_allocate (GtkWidget *widget,
|
|
GtkAllocation *allocation)
|
|
{
|
|
GcalArrowBinPrivate *priv;
|
|
GtkAllocation child_allocation;
|
|
GtkBorder padding;
|
|
GtkWidget *child;
|
|
guint arrow_size;
|
|
|
|
priv = gcal_arrow_bin_get_instance_private (GCAL_ARROW_BIN (widget));
|
|
|
|
gtk_widget_set_allocation (widget, allocation);
|
|
|
|
child = gtk_bin_get_child (GTK_BIN (widget));
|
|
if (child && gtk_widget_get_visible (child))
|
|
{
|
|
get_padding_and_border (widget, &padding, &arrow_size);
|
|
|
|
child_allocation.x = allocation->x + padding.left +
|
|
(priv->arrow_position == GTK_POS_LEFT ? arrow_size : 0);
|
|
child_allocation.y = allocation->y + padding.top +
|
|
(priv->arrow_position == GTK_POS_TOP ? arrow_size : 0);
|
|
|
|
child_allocation.height =
|
|
MAX (1,
|
|
allocation->height - padding.top - padding.bottom);
|
|
|
|
child_allocation.width =
|
|
MAX (1,
|
|
allocation->width - padding.left - padding.right);
|
|
|
|
if (priv->arrow_position == GTK_POS_LEFT ||
|
|
priv->arrow_position == GTK_POS_RIGHT)
|
|
{
|
|
child_allocation.width -= arrow_size;
|
|
}
|
|
else
|
|
{
|
|
child_allocation.height -= arrow_size;
|
|
}
|
|
|
|
gtk_widget_size_allocate (child, &child_allocation);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gcal_arrow_bin_draw (GtkWidget *widget,
|
|
cairo_t *cr)
|
|
{
|
|
GcalArrowBinPrivate *priv;
|
|
|
|
GtkBorder border;
|
|
gdouble selected_border;
|
|
gint selected_border_radius;
|
|
guint width;
|
|
guint height;
|
|
guint bw;
|
|
guint arrow_size;
|
|
gdouble arrow_start_point;
|
|
gdouble x, y;
|
|
|
|
priv = gcal_arrow_bin_get_instance_private (GCAL_ARROW_BIN (widget));
|
|
|
|
gtk_style_context_get_border (gtk_widget_get_style_context (widget),
|
|
gtk_widget_get_state_flags (widget),
|
|
&border);
|
|
|
|
gtk_style_context_get (gtk_widget_get_style_context (widget),
|
|
gtk_widget_get_state_flags (widget),
|
|
"border-radius", &selected_border_radius,
|
|
NULL);
|
|
|
|
gtk_style_context_get_style (gtk_widget_get_style_context (widget),
|
|
"arrow-size", &arrow_size, NULL);
|
|
|
|
bw = gtk_container_get_border_width (GTK_CONTAINER (widget));
|
|
width = gtk_widget_get_allocated_width (widget) - (border.left + border.right + 2 * bw);
|
|
height = gtk_widget_get_allocated_height (widget) - (border.top + border.bottom + 2 * bw);
|
|
|
|
selected_border = bw;
|
|
|
|
x = border.left + bw;
|
|
y = border.top + bw;
|
|
if (priv->arrow_position == GTK_POS_LEFT)
|
|
x += arrow_size;
|
|
if (priv->arrow_position == GTK_POS_TOP)
|
|
y += arrow_size;
|
|
|
|
switch (priv->arrow_position)
|
|
{
|
|
case GTK_POS_TOP:
|
|
selected_border += border.top;
|
|
break;
|
|
case GTK_POS_BOTTOM:
|
|
selected_border += border.bottom;
|
|
break;
|
|
case GTK_POS_LEFT:
|
|
selected_border += border.left;
|
|
break;
|
|
case GTK_POS_RIGHT:
|
|
selected_border += border.right;
|
|
break;
|
|
}
|
|
|
|
if (priv->arrow_position == GTK_POS_LEFT ||
|
|
priv->arrow_position == GTK_POS_RIGHT)
|
|
{
|
|
width -= arrow_size;
|
|
arrow_start_point = arrow_size + selected_border / 2 + selected_border_radius +
|
|
(height - 2 * (arrow_size + selected_border / 2 + selected_border_radius)) * priv->arrow_align;
|
|
}
|
|
else
|
|
{
|
|
height -= arrow_size;
|
|
arrow_start_point = arrow_size + selected_border / 2 + selected_border_radius +
|
|
(width - 2 * (arrow_size + selected_border / 2 + selected_border_radius)) * priv->arrow_align;
|
|
}
|
|
|
|
gtk_render_background (gtk_widget_get_style_context (widget),
|
|
cr,
|
|
x, y,
|
|
width, height);
|
|
gtk_render_frame_gap (gtk_widget_get_style_context (widget),
|
|
cr,
|
|
x, y,
|
|
width, height,
|
|
priv->arrow_position,
|
|
arrow_start_point - arrow_size,
|
|
arrow_start_point + arrow_size);
|
|
|
|
draw_arrow (widget, cr);
|
|
|
|
GTK_WIDGET_CLASS (gcal_arrow_bin_parent_class)->draw (widget, cr);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
GtkWidget*
|
|
gcal_arrow_bin_new (void)
|
|
{
|
|
return g_object_new (GCAL_TYPE_ARROW_BIN, NULL);
|
|
}
|
|
|
|
void
|
|
gcal_arrow_bin_set_arrow_pos (GcalArrowBin *arrow,
|
|
GtkPositionType arrow_pos)
|
|
{
|
|
g_return_if_fail (GCAL_IS_ARROW_BIN (arrow));
|
|
|
|
g_object_set (arrow, "arrow-position", arrow_pos, NULL);
|
|
}
|
|
|
|
GtkPositionType
|
|
gcal_arrow_bin_get_arrow_pos (GcalArrowBin *arrow)
|
|
{
|
|
GtkPositionType pos;
|
|
|
|
g_return_val_if_fail (GCAL_IS_ARROW_BIN (arrow), GTK_POS_BOTTOM);
|
|
|
|
g_object_get (arrow, "arrow-position", &pos, NULL);
|
|
return pos;
|
|
}
|
|
|
|
void
|
|
gcal_arrow_bin_set_arrow_align (GcalArrowBin *arrow,
|
|
gdouble align)
|
|
{
|
|
g_return_if_fail (GCAL_IS_ARROW_BIN (arrow));
|
|
|
|
g_object_set (arrow, "arrow-align", align, NULL);
|
|
}
|
|
|
|
gdouble
|
|
gcal_arrow_bin_get_arrow_align (GcalArrowBin *arrow)
|
|
{
|
|
gdouble align;
|
|
|
|
g_return_val_if_fail (GCAL_IS_ARROW_BIN (arrow), 0.5);
|
|
|
|
g_object_get (arrow, "arrow-align", &align, NULL);
|
|
return align;
|
|
}
|