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ui: added GcalAllDayGrid widget.

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GcalAllDayGrid will work for day and week view.
This is the initial implementation, that doesn't respond
to events (mouse clicks)
This commit is contained in:
Erick Pérez Castellanos
2014-12-04 17:10:21 -05:00
parent 7888bcc872
commit bfa996b982
3 changed files with 761 additions and 0 deletions
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src/Makefile.am
+2
View File
@@ -56,6 +56,8 @@ gnome_calendar_SOURCES = \
gcal-manager.h \
gcal-nav-bar.h \
gcal-nav-bar.c \
gcal-all-day-grid.c \
gcal-all-day-grid.h \
gcal-utils.c \
gcal-utils.h
src/gcal-all-day-grid.c
+695
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@@ -0,0 +1,695 @@
/* -*- mode: c; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* gcal-all-day-grid.c
*
* Copyright (C) 2012 - Erick Pérez Castellanos
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "gcal-all-day-grid.h"
#include <string.h>
enum
{
PROP_0,
PROP_COLUMNS,
PROP_SPACING
};
struct _GcalAllDayGridPrivate
{
/* property */
guint columns_nr;
gint spacing;
GList *column_headers;
GList *children;
};
static void gcal_all_day_grid_finalize (GObject *object);
static void gcal_all_day_grid_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gcal_all_day_grid_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gcal_all_day_grid_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural);
static void gcal_all_day_grid_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural);
/* FIXME: realize/unrealize/map/unmap commented out tll testing
not needed because I'm not using event-window here */
/* static void gcal_all_day_grid_realize (GtkWidget *widget); */
/* static void gcal_all_day_grid_unrealize (GtkWidget *widget); */
/* static void gcal_all_day_grid_map (GtkWidget *widget); */
/* static void gcal_all_day_grid_unmap (GtkWidget *widget); */
static void gcal_all_day_grid_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static gboolean gcal_all_day_grid_draw (GtkWidget *widget,
cairo_t *cr);
static void gcal_all_day_grid_add (GtkContainer *container,
GtkWidget *widget);
static void gcal_all_day_grid_remove (GtkContainer *container,
GtkWidget *widget);
static void gcal_all_day_grid_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
G_DEFINE_TYPE (GcalAllDayGrid,gcal_all_day_grid, GTK_TYPE_CONTAINER);
static void
gcal_all_day_grid_class_init (GcalAllDayGridClass *klass)
{
GObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gcal_all_day_grid_finalize;
object_class->set_property = gcal_all_day_grid_set_property;
object_class->get_property = gcal_all_day_grid_get_property;
widget_class = GTK_WIDGET_CLASS (klass);
widget_class->get_preferred_width = gcal_all_day_grid_get_preferred_width;
widget_class->get_preferred_height = gcal_all_day_grid_get_preferred_height;
/* FIXME: realize/unrealize/map/unmap commented out tll testing
not needed because I'm not using event-window here */
/* widget_class->realize = gcal_all_day_grid_realize; */
/* widget_class->unrealize = gcal_all_day_grid_unrealize; */
/* widget_class->map = gcal_all_day_grid_map; */
/* widget_class->unmap = gcal_all_day_grid_unmap; */
widget_class->size_allocate = gcal_all_day_grid_size_allocate;
widget_class->draw = gcal_all_day_grid_draw;
container_class = GTK_CONTAINER_CLASS (klass);
container_class->add = gcal_all_day_grid_add;
container_class->remove = gcal_all_day_grid_remove;
container_class->forall = gcal_all_day_grid_forall;
gtk_container_class_handle_border_width (container_class);
g_object_class_install_property (
object_class,
PROP_COLUMNS,
g_param_spec_uint ("columns",
"Columns",
"The number of columns in which to split the grid",
0,
G_MAXUINT,
0,
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_READWRITE));
g_object_class_install_property (
object_class,
PROP_SPACING,
g_param_spec_int ("spacing",
"Spacing",
"The horizontal space between the header and the side and below lines",
0,
G_MAXINT,
0,
G_PARAM_CONSTRUCT |
G_PARAM_READWRITE));
g_type_class_add_private ((gpointer)klass, sizeof (GcalAllDayGridPrivate));
}
static void
gcal_all_day_grid_init (GcalAllDayGrid *self)
{
GcalAllDayGridPrivate *priv;
gtk_widget_set_has_window (GTK_WIDGET (self), FALSE);
self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
GCAL_TYPE_ALL_DAY_GRID,
GcalAllDayGridPrivate);
priv = self->priv;
priv->column_headers = NULL;
priv->children = NULL;
}
static void
gcal_all_day_grid_finalize (GObject *object)
{
GcalAllDayGridPrivate *priv;
priv = GCAL_ALL_DAY_GRID (object)->priv;
if (priv->children != NULL)
g_list_free_full (priv->children, (GDestroyNotify) g_list_free);
if (priv->column_headers != NULL)
g_list_free_full (priv->column_headers, g_free);
/* Chain up to parent's finalize() method. */
G_OBJECT_CLASS (gcal_all_day_grid_parent_class)->finalize (object);
}
static void
gcal_all_day_grid_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GcalAllDayGridPrivate *priv;
priv = GCAL_ALL_DAY_GRID (object)->priv;
switch (property_id)
{
case PROP_COLUMNS:
{
gint i;
priv->columns_nr = g_value_get_uint (value);
for (i = 0; i < priv->columns_nr; ++i)
{
priv->children = g_list_append (priv->children, NULL);
}
break;
}
case PROP_SPACING:
priv->spacing = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gcal_all_day_grid_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GcalAllDayGridPrivate *priv;
priv = GCAL_ALL_DAY_GRID (object)->priv;
switch (property_id)
{
case PROP_COLUMNS:
g_value_set_uint (value, priv->columns_nr);
break;
case PROP_SPACING:
g_value_set_int (value, priv->spacing);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
/* GtkWidget API */
static void
gcal_all_day_grid_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural)
{
GcalAllDayGridPrivate* priv;
GtkBorder padding;
GList *headers;
gchar *longest_header;
gint length;
PangoLayout *layout;
PangoRectangle logical_rect;
priv = GCAL_ALL_DAY_GRID (widget)->priv;
length = 0;
longest_header = NULL;
for (headers = priv->column_headers;
headers != NULL;
headers = g_list_next (headers))
{
gchar *header = (gchar*) headers->data;
if (length < strlen (header))
{
length = strlen (header);
longest_header = header;
}
}
layout = gtk_widget_create_pango_layout (widget, longest_header);
pango_layout_get_extents (layout, NULL, &logical_rect);
pango_extents_to_pixels (&logical_rect, NULL);
gtk_style_context_get_padding (gtk_widget_get_style_context (widget),
gtk_widget_get_state_flags (widget),
&padding);
if (minimum != NULL)
{
*minimum =
(priv->columns_nr * logical_rect.width) + padding.left + padding.right +
(priv->columns_nr * 2 * priv->spacing);
}
if (natural != NULL)
{
*natural =
(priv->columns_nr * logical_rect.width) + padding.left + padding.right +
(priv->columns_nr * 2 * priv->spacing);
}
g_object_unref (layout);
}
static void
gcal_all_day_grid_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural)
{
GcalAllDayGridPrivate* priv;
GList *columns;
gint min_height;
guint min_keeper;
gint nat_height;
guint nat_keeper;
GtkBorder padding;
PangoLayout *layout;
PangoRectangle logical_rect;
priv = GCAL_ALL_DAY_GRID (widget)->priv;
layout = gtk_widget_create_pango_layout (widget, "0");
pango_layout_get_extents (layout, NULL, &logical_rect);
pango_extents_to_pixels (&logical_rect, NULL);
gtk_style_context_get_padding (gtk_widget_get_style_context (widget),
gtk_widget_get_state_flags (widget),
&padding);
g_object_unref (layout);
min_keeper = G_MAXUINT;
nat_keeper = 0;
for (columns = priv->children;
columns != NULL;
columns = g_list_next (columns))
{
GList *column_children = (GList*) columns->data;
gint column_height;
for (;column_children != NULL;
column_children = g_list_next (column_children))
{
GtkWidget *widget;
widget = (GtkWidget*) column_children->data;
gtk_widget_get_preferred_height (widget, &min_height, &nat_height);
/* minimum is calculated as the minimum required
by any child */
if (min_keeper < min_height)
min_keeper = min_height;
column_height += nat_height;
}
if (nat_keeper < column_height)
nat_keeper = column_height;
}
if (minimum != NULL)
{
*minimum = min_keeper + logical_rect.height + priv->spacing + padding.top + padding.bottom;
}
if (natural != NULL)
{
*natural = nat_keeper + logical_rect.height + priv->spacing + padding.top + padding.bottom;
}
}
static void
gcal_all_day_grid_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GcalAllDayGridPrivate *priv;
GtkBorder padding;
gint y_gap;
PangoLayout *layout;
PangoRectangle logical_rect;
GList *columns;
gint idx;
gint width;
priv = GCAL_ALL_DAY_GRID (widget)->priv;
gtk_widget_set_allocation (widget, allocation);
gtk_style_context_get_padding (
gtk_widget_get_style_context (widget),
gtk_widget_get_state_flags (widget),
&padding);
width = allocation->width - (padding.left + padding.right);
layout = gtk_widget_create_pango_layout (widget, "0");
pango_layout_get_extents (layout, NULL, &logical_rect);
pango_extents_to_pixels (&logical_rect, NULL);
y_gap = allocation->y + padding.top + logical_rect.height + priv->spacing;
g_object_unref (layout);
/* Placing children */
for (columns = priv->children, idx = 0;
columns != NULL;
columns = g_list_next (columns), ++idx)
{
GtkAllocation child_allocation;
GList *column;
column = (GList*) columns->data;
child_allocation.x = idx * (width / priv->columns_nr) + allocation->x + padding.left;
child_allocation.width = (width / priv->columns_nr);
for (; column != NULL; column = g_list_next (column))
{
gint natural_height;
GtkWidget *item = (GtkWidget*) column->data;
gtk_widget_get_preferred_height (item, NULL, &natural_height);
child_allocation.y = y_gap;
child_allocation.height = natural_height;
y_gap += natural_height;
gtk_widget_size_allocate (item, &child_allocation);
}
y_gap = allocation->y + padding.top + logical_rect.height + priv->spacing;
}
}
static gboolean
gcal_all_day_grid_draw (GtkWidget *widget,
cairo_t *cr)
{
GcalAllDayGridPrivate *priv;
GtkBorder padding;
GtkAllocation alloc;
gint width;
gint height;
gint y_gap;
PangoLayout *layout;
PangoRectangle logical_rect;
PangoFontDescription *font_desc;
GList *header;
gint i;
GdkRGBA ligther_color;
priv = GCAL_ALL_DAY_GRID (widget)->priv;
gtk_style_context_get_padding (
gtk_widget_get_style_context (widget),
gtk_widget_get_state_flags (widget),
&padding);
gtk_widget_get_allocation (widget, &alloc);
width = alloc.width - (padding.left + padding.right);
height = alloc.height - (padding.top + padding.bottom);
y_gap = padding.top + priv->spacing;
cairo_save (cr);
gtk_style_context_get (
gtk_widget_get_style_context (widget),
gtk_widget_get_state_flags (widget),
"font", &font_desc, NULL);
layout = pango_cairo_create_layout (cr);
pango_layout_set_font_description (layout, font_desc);
pango_layout_get_extents (layout, NULL, &logical_rect);
pango_extents_to_pixels (&logical_rect, NULL);
y_gap += logical_rect.height;
for (header = priv->column_headers, i = 0;
header != NULL;
header = g_list_next (header), i++)
{
gchar *text = (gchar*) header->data;
pango_layout_set_text (layout, text, -1);
pango_cairo_update_layout (cr, layout);
cairo_move_to (cr,
(width / priv->columns_nr) * i + priv->spacing + padding.left,
padding.top);
pango_cairo_show_layout (cr, layout);
}
/* drawing lines */
gtk_style_context_get_color (
gtk_widget_get_style_context (widget),
gtk_widget_get_state_flags (widget) | GTK_STATE_FLAG_INSENSITIVE,
&ligther_color);
cairo_set_source_rgb (cr,
ligther_color.red,
ligther_color.green,
ligther_color.blue);
cairo_set_line_width (cr, 0.3);
cairo_move_to (cr, padding.left, y_gap + 0.4);
cairo_rel_line_to (cr, width, 0);
for (i = 0; i < priv->columns_nr + 1; ++i)
{
cairo_move_to (cr, padding.left + i * (width / priv->columns_nr) + 0.4, y_gap);
cairo_rel_line_to (cr, 0, height - y_gap);
}
cairo_stroke (cr);
cairo_restore (cr);
/* drawing childrens */
if (GTK_WIDGET_CLASS (gcal_all_day_grid_parent_class)->draw != NULL)
GTK_WIDGET_CLASS (gcal_all_day_grid_parent_class)->draw (widget, cr);
pango_font_description_free (font_desc);
g_object_unref (layout);
return FALSE;
}
/* GtkContainer API */
/*
* gcal_all_day_grid_add:
*
* @gtk_container_add implementation. It assumes the widget will go
* to the first column. If there's no column set, will set columns to 1
*/
static void
gcal_all_day_grid_add (GtkContainer *container,
GtkWidget *widget)
{
GcalAllDayGridPrivate* priv;
priv = GCAL_ALL_DAY_GRID (container)->priv;
if (priv->columns_nr == 0)
priv->columns_nr = 1;
gcal_all_day_grid_place (GCAL_ALL_DAY_GRID (container),
widget,
0);
}
static void
gcal_all_day_grid_remove (GtkContainer *container,
GtkWidget *widget)
{
GcalAllDayGridPrivate *priv;
GList *columns;
priv = GCAL_ALL_DAY_GRID (container)->priv;
if (priv->children != NULL)
{
for (columns = priv->children;
columns != NULL;
columns = g_list_next (columns))
{
GList* column = (GList*) columns->data;
for (;column != NULL; column = g_list_next (column))
{
if (widget == (GtkWidget*) column->data)
{
GList* orig = (GList*) columns->data;
orig = g_list_delete_link (orig, column);
gtk_widget_unparent (widget);
columns->data = orig;
columns = NULL;
break;
}
}
}
}
}
static void
gcal_all_day_grid_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GcalAllDayGridPrivate *priv;
GList* columns;
priv = GCAL_ALL_DAY_GRID (container)->priv;
if (priv->children != NULL)
{
columns = priv->children;
while (columns)
{
GList *column;
column = columns->data;
columns = columns->next;
while (column)
{
GtkWidget *child = (GtkWidget*) column->data;
column = column->next;
(* callback) (child, callback_data);
}
}
}
}
/* Public API */
/**
* gcal_all_day_grid_new:
*
* Since: 0.1
* Return value: A new #GcalAllDayGrid
* Returns: (transfer full):
**/
GtkWidget*
gcal_all_day_grid_new (guint columns)
{
return g_object_new (GCAL_TYPE_ALL_DAY_GRID, "columns", columns, NULL);
}
/**
* gcal_all_day_grid_set_column_headers:
* @all_day: A #GcalAllDayGrid
* @...: a list of strings
*
* Set the columns headers. If #GcalAllDayGrid:columns property
* has not been set, this function does nothing.
**/
void
gcal_all_day_grid_set_column_headers (GcalAllDayGrid *all_day,
...)
{
GcalAllDayGridPrivate *priv;
va_list args;
gint i;
priv = all_day->priv;
if (priv->columns_nr == 0)
return;
if (priv->column_headers != NULL)
g_list_free_full (priv->column_headers, g_free);
va_start (args, all_day);
for (i = 0; i < priv->columns_nr; ++i)
{
gchar *header;
header = g_strdup (va_arg(args, gchar*));
priv->column_headers = g_list_append (priv->column_headers,
header);
}
va_end (args);
}
/**
* gcal_all_day_grid_place:
* @all_day: A #GcalAllDayGrid widget
* @widget: The child widget to add
* @column_idx: The index of the column, starting with zero
*
* Adding a widget to a specified column. If the column index
* is bigger than the #GcalAllDayGrid:columns property set,
* it will do nothing.
**/
void
gcal_all_day_grid_place (GcalAllDayGrid *all_day,
GtkWidget *widget,
gint column_idx)
{
GcalAllDayGridPrivate *priv;
GList* children_link;
GList* column;
priv = all_day->priv;
g_return_if_fail (column_idx < priv->columns_nr);
children_link = g_list_nth (priv->children, column_idx);
column = (GList*) children_link->data;
children_link->data = g_list_append (column, widget);
gtk_widget_set_parent (widget, GTK_WIDGET (all_day));
}
src/gcal-all-day-grid.h
+64
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@@ -0,0 +1,64 @@
/*
* gcal-all-day-grid.h
*
* Copyright (C) 2012 - Erick Pérez Castellanos
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __GCAL_ALL_DAY_GRID_H__
#define __GCAL_ALL_DAY_GRID_H__
#include <gtk/gtk.h>
G_BEGIN_DECLS
#define GCAL_TYPE_ALL_DAY_GRID (gcal_all_day_grid_get_type ())
#define GCAL_ALL_DAY_GRID(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), GCAL_TYPE_ALL_DAY_GRID, GcalAllDayGrid))
#define GCAL_ALL_DAY_GRID_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GCAL_TYPE_ALL_DAY_GRID, GcalAllDayGridClass))
#define GCAL_IS_ALL_DAY_GRID(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), GCAL_TYPE_ALL_DAY_GRID))
#define GCAL_IS_ALL_DAY_GRID_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GCAL_TYPE_ALL_DAY_GRID))
#define GCAL_ALL_DAY_GRID_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), GCAL_TYPE_ALL_DAY_GRID, GcalAllDayGridClass))
typedef struct _GcalAllDayGrid GcalAllDayGrid;
typedef struct _GcalAllDayGridClass GcalAllDayGridClass;
typedef struct _GcalAllDayGridPrivate GcalAllDayGridPrivate;
struct _GcalAllDayGrid
{
GtkContainer parent;
/* add your public declarations here */
GcalAllDayGridPrivate *priv;
};
struct _GcalAllDayGridClass
{
GtkContainerClass parent_class;
};
GType gcal_all_day_grid_get_type (void);
GtkWidget* gcal_all_day_grid_new (guint columns);
void gcal_all_day_grid_set_column_headers (GcalAllDayGrid *all_day,
...);
void gcal_all_day_grid_place (GcalAllDayGrid *all_day,
GtkWidget *widget,
gint column_idx);
G_END_DECLS
#endif /* __GCAL_ALL_DAY_GRID_H__ */