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federated-calendar/src/gui/views/gcal-dazzling-month-view.c
T
Georges Basile Stavracas Neto 3a36f75877 views/dazzling-month-view: Tentatively support wheel scroll 
Add a dedicated discrete scroll event controller, and ensure
each event controller handles the right types of events.
2023-08-11 15:13:44 -03:00

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/*
* gcal-dazzling-month-view.c
*
* Copyright 2023 Georges Basile Stavracas Neto <georges.stavracas@gmail.com>
*
* 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 3 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/>.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*/
#define G_LOG_DOMAIN "GcalDazzlingMonthView"
#include "config.h"
#include "gcal-context.h"
#include "gcal-dazzling-month-view.h"
#include "gcal-debug.h"
#include "gcal-month-view-row.h"
#include "gcal-range-tree.h"
#include "gcal-timeline-subscriber.h"
#include "gcal-utils.h"
#include "gcal-view-private.h"
#include <math.h>
#include <adwaita.h>
#define N_ROWS_PER_PAGE 5
#define N_PAGES 5
#define N_TOTAL_ROWS (N_ROWS_PER_PAGE * N_PAGES)
// N_PAGES must be an odd number
G_STATIC_ASSERT (N_PAGES % 2 != 0);
struct _GcalDazzlingMonthView
{
GtkWidget parent;
GtkWidget *header;
GtkWidget *month_label;
GtkWidget *year_label;
GtkWidget *weekday_label[7];
GPtrArray *week_rows;
GcalRangeTree *events;
GHashTable *events2;
/* Ranges from [0.0, 1.0] */
gdouble row_offset;
AdwAnimation *row_offset_animation;
AdwAnimation *kinetic_scroll_animation;
gdouble last_velocity;
GDateTime *date;
GcalContext *context;
};
static void gcal_view_interface_init (GcalViewInterface *iface);
static void gtk_buildable_interface_init (GtkBuildableIface *iface);
static void gcal_timeline_subscriber_interface_init (GcalTimelineSubscriberInterface *iface);
G_DEFINE_FINAL_TYPE_WITH_CODE (GcalDazzlingMonthView, gcal_dazzling_month_view, GTK_TYPE_WIDGET,
G_IMPLEMENT_INTERFACE (GCAL_TYPE_TIMELINE_SUBSCRIBER, gcal_timeline_subscriber_interface_init)
G_IMPLEMENT_INTERFACE (GCAL_TYPE_VIEW, gcal_view_interface_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE, gtk_buildable_interface_init))
enum
{
PROP_0,
PROP_CONTEXT,
PROP_DATE,
N_PROPS,
};
/*
* Auxiliary methods
*/
static void
update_header_labels (GcalDazzlingMonthView *self)
{
gchar year_str[10] = { 0, };
g_snprintf (year_str, 10, "%d", g_date_time_get_year (self->date));
gtk_label_set_label (GTK_LABEL (self->month_label), gcal_get_month_name (g_date_time_get_month (self->date) - 1));
gtk_label_set_label (GTK_LABEL (self->year_label), year_str);
}
static inline void
update_weekday_labels (GcalDazzlingMonthView *self)
{
const gint first_weekday = get_first_weekday ();
for (gint i = 0; i < 7; i++)
{
g_autofree gchar *weekday_name = NULL;
weekday_name = g_utf8_strup (gcal_get_weekday ((i + first_weekday) % 7), -1);
gtk_label_set_label (GTK_LABEL (self->weekday_label[i]), weekday_name);
}
}
static void
update_week_ranges (GcalDazzlingMonthView *self)
{
gint n_weeks_before;
/*
* The current date corresponds to the week of the first
* visible row.
*/
n_weeks_before = N_ROWS_PER_PAGE * (N_PAGES - 1) / 2;
for (gint i = 0; i < self->week_rows->len; i++)
{
g_autoptr (GDateTime) week_start = NULL;
g_autoptr (GDateTime) week_end = NULL;
g_autoptr (GcalRange) range = NULL;
g_autoptr (GDateTime) date = NULL;
GcalMonthViewRow *row;
date = g_date_time_add_weeks (self->date, i - n_weeks_before);
week_start = gcal_date_time_get_start_of_week (date);
week_end = gcal_date_time_get_end_of_week (date);
range = gcal_range_new (week_start, week_end, GCAL_RANGE_DATE_ONLY);
row = g_ptr_array_index (self->week_rows, i);
gcal_month_view_row_set_range (row, range);
}
}
static void
cancel_deceleration (GcalDazzlingMonthView *self)
{
if (self->kinetic_scroll_animation == 0)
return;
adw_animation_pause (self->kinetic_scroll_animation);
g_clear_object (&self->kinetic_scroll_animation);
}
static void
cancel_row_offset_animation (GcalDazzlingMonthView *self)
{
if (!self->row_offset_animation)
return;
adw_animation_pause (self->row_offset_animation);
g_clear_object (&self->row_offset_animation);
}
static void
update_active_date (GcalDazzlingMonthView *self)
{
g_autoptr (GcalRange) top_row_range = NULL;
GtkWidget *top_row;
top_row = g_ptr_array_index (self->week_rows, N_ROWS_PER_PAGE * (N_PAGES - 1) / 2);
top_row_range = gcal_month_view_row_get_range (GCAL_MONTH_VIEW_ROW (top_row));
g_assert (top_row_range != NULL);
gcal_view_set_date (GCAL_VIEW (self), gcal_range_get_start (top_row_range));
g_object_notify (G_OBJECT (self), "active-date");
}
static void
move_bottom_row_to_top (GcalDazzlingMonthView *self)
{
g_autoptr (GcalRange) first_row_range = NULL;
g_autoptr (GcalRange) new_range = NULL;
GDateTime *first_row_range_start;
GtkWidget *first_row;
GtkWidget *last_row;
first_row = g_ptr_array_index (self->week_rows, 0);
first_row_range = gcal_month_view_row_get_range (GCAL_MONTH_VIEW_ROW (first_row));
g_assert (first_row_range != NULL);
first_row_range_start = gcal_range_get_end (first_row_range);
g_assert (first_row_range_start != NULL);
new_range = gcal_range_new_take (g_date_time_add_weeks (first_row_range_start, -1),
g_date_time_ref (first_row_range_start),
GCAL_RANGE_DATE_ONLY);
#ifdef GCAL_ENABLE_TRACE
{
g_autofree gchar *new_range_str = gcal_range_to_string (new_range);
GCAL_TRACE_MSG ("Moved bottom row to top, new range: %s", new_range_str);
}
#endif
last_row = g_ptr_array_steal_index (self->week_rows, self->week_rows->len - 1);
gcal_month_view_row_set_range (GCAL_MONTH_VIEW_ROW (last_row), new_range);
g_ptr_array_insert (self->week_rows, 0, last_row);
}
static void
move_top_row_to_bottom (GcalDazzlingMonthView *self)
{
g_autoptr (GcalRange) last_row_range = NULL;
g_autoptr (GcalRange) new_range = NULL;
GDateTime *last_row_range_end;
GtkWidget *first_row;
GtkWidget *last_row;
last_row = g_ptr_array_index (self->week_rows, self->week_rows->len - 1);
last_row_range = gcal_month_view_row_get_range (GCAL_MONTH_VIEW_ROW (last_row));
g_assert (last_row_range != NULL);
last_row_range_end = gcal_range_get_end (last_row_range);
g_assert (last_row_range_end != NULL);
new_range = gcal_range_new_take (g_date_time_ref (last_row_range_end),
g_date_time_add_weeks (last_row_range_end, 1),
GCAL_RANGE_DATE_ONLY);
#ifdef GCAL_ENABLE_TRACE
{
g_autofree gchar *new_range_str = gcal_range_to_string (new_range);
GCAL_TRACE_MSG ("Moved top row to bottom, new range: %s", new_range_str);
}
#endif
first_row = g_ptr_array_steal_index (self->week_rows, 0);
gcal_month_view_row_set_range (GCAL_MONTH_VIEW_ROW (first_row), new_range);
g_ptr_array_insert (self->week_rows, -1, first_row);
}
static inline void
dump_row_ranges (GcalDazzlingMonthView *self)
{
#if defined(GCAL_ENABLE_TRACE) && 0
for (guint i = 0; i < self->week_rows->len; i++)
{
g_autoptr (GcalRange) range = NULL;
g_autofree gchar *range_str = NULL;
GtkWidget *row;
row = g_ptr_array_index (self->week_rows, i);
range = gcal_month_view_row_get_range (GCAL_MONTH_VIEW_ROW (row));
range_str = gcal_range_to_string (range);
GCAL_TRACE_MSG (" Row %u: %s", i, range_str);
}
#endif
}
static inline gint
get_grid_height (GcalDazzlingMonthView *self)
{
return gtk_widget_get_height (GTK_WIDGET (self)) - gtk_widget_get_height (self->header);
}
static void
offset_and_shuffle_rows (GcalDazzlingMonthView *self,
gdouble dy)
{
gdouble row_height;
gint grid_height;
GCAL_ENTRY;
grid_height = get_grid_height (self);
row_height = grid_height / (gdouble) N_ROWS_PER_PAGE;
self->row_offset += dy / row_height;
if (fabs (self->row_offset) > 0.5)
{
gint rows_to_shuffle = round (fabs (self->row_offset) + 0.5);
g_assert (rows_to_shuffle > 0);
if (self->row_offset >= 0.0)
{
/* Positive offset: move top rows to the bottom */
while (rows_to_shuffle--)
move_top_row_to_bottom (self);
self->row_offset = fmod (self->row_offset, 0.5) - 0.5;
}
else
{
/* Negative offset: move bottom rows to the top */
while (rows_to_shuffle--)
move_bottom_row_to_top (self);
self->row_offset = fmod (self->row_offset, 0.5) + 0.5;
}
update_active_date (self);
dump_row_ranges (self);
}
gtk_widget_queue_allocate (GTK_WIDGET (self));
GCAL_EXIT;
}
static void
animate_row_offset_cb (gdouble value,
gpointer user_data)
{
GcalDazzlingMonthView *self = GCAL_DAZZLING_MONTH_VIEW (user_data);
self->row_offset = value;
gtk_widget_queue_allocate (GTK_WIDGET (self));
}
static void
on_row_offset_animation_done (AdwAnimation *animation,
GcalDazzlingMonthView *self)
{
gtk_widget_remove_css_class (GTK_WIDGET (self), "scrolling");
cancel_row_offset_animation (self);
}
static void
snap_to_top_row (GcalDazzlingMonthView *self)
{
g_autoptr (AdwAnimationTarget) animation_target = NULL;
GCAL_ENTRY;
update_active_date (self);
dump_row_ranges (self);
animation_target = adw_callback_animation_target_new (animate_row_offset_cb, self, NULL);
g_clear_object (&self->row_offset_animation);
self->row_offset_animation = adw_timed_animation_new (GTK_WIDGET (self),
self->row_offset,
0.0,
200, // ms
g_steal_pointer (&animation_target));
adw_timed_animation_set_easing (ADW_TIMED_ANIMATION (self->row_offset_animation),
ADW_EASE_OUT_QUAD);
g_signal_connect (self->row_offset_animation,
"done",
G_CALLBACK (on_row_offset_animation_done),
self);
adw_animation_play (self->row_offset_animation);
GCAL_EXIT;
}
/*
* Callbacks
*/
static void
on_scroll_controller_scroll_begin_cb (GtkEventControllerScroll *scroll_controller,
GcalDazzlingMonthView *self)
{
GdkEvent *event;
GCAL_ENTRY;
event = gtk_event_controller_get_current_event (GTK_EVENT_CONTROLLER (scroll_controller));
if (gdk_event_get_event_type (event) != GDK_TOUCHPAD_HOLD ||
gdk_touchpad_event_get_n_fingers (event) > 1)
{
gtk_widget_add_css_class (GTK_WIDGET (self), "scrolling");
cancel_row_offset_animation (self);
cancel_deceleration (self);
}
GCAL_EXIT;
}
static gboolean
on_scroll_controller_scroll_cb (GtkEventControllerScroll *scroll_controller,
gdouble dx,
gdouble dy,
GcalDazzlingMonthView *self)
{
GdkEvent *current_event;
GCAL_ENTRY;
current_event = gtk_event_controller_get_current_event (GTK_EVENT_CONTROLLER (scroll_controller));
switch (gdk_scroll_event_get_direction (current_event))
{
case GDK_SCROLL_SMOOTH:
cancel_row_offset_animation (self);
cancel_deceleration (self);
offset_and_shuffle_rows (self, dy);
GCAL_RETURN (GDK_EVENT_STOP);
default:
GCAL_RETURN (GDK_EVENT_PROPAGATE);
}
}
static gboolean
on_discrete_scroll_controller_scroll_cb (GtkEventControllerScroll *scroll_controller,
gdouble dx,
gdouble dy,
GcalDazzlingMonthView *self)
{
GdkEvent *current_event;
GCAL_ENTRY;
current_event = gtk_event_controller_get_current_event (GTK_EVENT_CONTROLLER (scroll_controller));
switch (gdk_scroll_event_get_direction (current_event))
{
case GDK_SCROLL_UP:
move_bottom_row_to_top (self);
break;
case GDK_SCROLL_DOWN:
move_top_row_to_bottom (self);
break;
default:
GCAL_RETURN (GDK_EVENT_PROPAGATE);
}
gtk_widget_remove_css_class (GTK_WIDGET (self), "scrolling");
cancel_row_offset_animation (self);
cancel_deceleration (self);
update_active_date (self);
dump_row_ranges (self);
self->row_offset = 0.0;
gtk_widget_queue_allocate (GTK_WIDGET (self));
GCAL_RETURN (GDK_EVENT_STOP);
}
static void
on_scroll_controller_scroll_end_cb (GtkEventControllerScroll *scroll_controller,
GcalDazzlingMonthView *self)
{
GCAL_ENTRY;
snap_to_top_row (self);
GCAL_EXIT;
}
static void
decelerate_scroll_cb (gdouble value,
gpointer user_data)
{
GcalDazzlingMonthView *self = GCAL_DAZZLING_MONTH_VIEW (user_data);
gdouble dy;
dy = self->last_velocity - value;
self->last_velocity = value;
if (fabs (value) > (get_grid_height (self) / (gdouble) N_ROWS_PER_PAGE / 5.0))
offset_and_shuffle_rows (self, dy);
else
adw_animation_skip (self->kinetic_scroll_animation);
}
static void
on_kinetic_scroll_done_cb (AdwAnimation *animation,
GcalDazzlingMonthView *self)
{
GCAL_ENTRY;
snap_to_top_row (self);
GCAL_EXIT;
}
static void
on_scroll_controller_decelerate_cb (GtkEventControllerScroll *scroll_controller,
gdouble velocity_x,
gdouble velocity_y,
GcalDazzlingMonthView *self)
{
g_autoptr (AdwAnimationTarget) animation_target = NULL;
gdouble row_height;
gdouble duration;
gint grid_height;
GCAL_ENTRY;
/* XXX: I don't understand, but this just feels better */
velocity_y /= 2.0;
cancel_row_offset_animation (self);
cancel_deceleration (self);
grid_height = get_grid_height (self);
if (fabs (velocity_y) < (grid_height / (gdouble) N_ROWS_PER_PAGE / 5.0))
{
snap_to_top_row (self);
GCAL_RETURN ();
}
duration = fabs (velocity_y) / (gdouble) gtk_widget_get_height (GTK_WIDGET (self));
animation_target = adw_callback_animation_target_new (decelerate_scroll_cb, self, NULL);
/* Hijack the velocity so that it always ends in an actual row */
row_height = grid_height / (gdouble) N_ROWS_PER_PAGE;
velocity_y -= fmod (velocity_y, row_height) + self->row_offset * row_height;
g_assert (self->kinetic_scroll_animation == NULL);
self->kinetic_scroll_animation = adw_timed_animation_new (GTK_WIDGET (self),
velocity_y,
0.0,
duration * 1000, // ms
g_steal_pointer (&animation_target));
self->last_velocity = velocity_y;
adw_timed_animation_set_easing (ADW_TIMED_ANIMATION (self->kinetic_scroll_animation),
ADW_EASE_OUT_EXPO);
g_signal_connect (self->kinetic_scroll_animation,
"done",
G_CALLBACK (on_kinetic_scroll_done_cb),
self);
adw_animation_play (self->kinetic_scroll_animation);
GCAL_EXIT;
}
/*
* GcalTimelineSubscriber iface
*/
static GcalRange*
gcal_dazzling_month_view_get_range (GcalTimelineSubscriber *subscriber)
{
g_autoptr (GcalRange) first_row_range = NULL;
g_autoptr (GcalRange) last_row_range = NULL;
GcalDazzlingMonthView *self;
self = GCAL_DAZZLING_MONTH_VIEW (subscriber);
first_row_range = gcal_month_view_row_get_range (g_ptr_array_index (self->week_rows, 0));
last_row_range = gcal_month_view_row_get_range (g_ptr_array_index (self->week_rows,
self->week_rows->len - 1));
return gcal_range_union (first_row_range, last_row_range);
}
static void
gcal_dazzling_month_view_add_event (GcalTimelineSubscriber *subscriber,
GcalEvent *event)
{
GcalDazzlingMonthView *self;
GCAL_ENTRY;
g_assert (event != NULL);
self = GCAL_DAZZLING_MONTH_VIEW (subscriber);
if (!g_hash_table_add (self->events2, g_object_ref (event)))
{
g_warning ("Event with uuid: %s already added", gcal_event_get_uid (event));
GCAL_RETURN ();
}
for (guint i = 0; i < self->week_rows->len; i++)
{
g_autoptr (GcalRange) row_range = NULL;
GcalRangePosition position;
GcalRangeOverlap overlap;
GcalMonthViewRow *row;
row = g_ptr_array_index (self->week_rows, i);
row_range = gcal_month_view_row_get_range (row);
overlap = gcal_range_calculate_overlap (row_range, gcal_event_get_range (event), &position);
if (overlap != GCAL_RANGE_NO_OVERLAP)
{
g_message ("Adding event %s to row %u", gcal_event_get_uid (event), i);
gcal_month_view_row_add_event (row, event);
}
else
{
if (position == GCAL_RANGE_AFTER)
break;
}
}
GCAL_EXIT;
}
static void
gcal_dazzling_month_view_update_event (GcalTimelineSubscriber *subscriber,
GcalEvent *event)
{
}
static void
gcal_dazzling_month_view_remove_event (GcalTimelineSubscriber *subscriber,
GcalEvent *event)
{
g_autoptr (GcalEvent) owned_event = NULL;
GcalDazzlingMonthView *self;
GCAL_ENTRY;
g_assert (event != NULL);
self = GCAL_DAZZLING_MONTH_VIEW (subscriber);
/* Keep event alive while removing it */
owned_event = g_object_ref (event);
if (!g_hash_table_remove (self->events2, event))
{
g_warning ("Event with uuid: %s not in %s", gcal_event_get_uid (event), G_OBJECT_TYPE_NAME (self));
GCAL_RETURN ();
}
for (guint i = 0; i < self->week_rows->len; i++)
{
g_autoptr (GcalRange) row_range = NULL;
GcalRangePosition position;
GcalRangeOverlap overlap;
GcalMonthViewRow *row;
row = g_ptr_array_index (self->week_rows, i);
row_range = gcal_month_view_row_get_range (row);
overlap = gcal_range_calculate_overlap (row_range, gcal_event_get_range (event), &position);
if (overlap != GCAL_RANGE_NO_OVERLAP)
{
g_message ("Remove event %s to row %u", gcal_event_get_uid (event), i);
gcal_month_view_row_remove_event (row, event);
}
else
{
if (position == GCAL_RANGE_AFTER)
break;
}
}
GCAL_EXIT;
}
static void
gcal_timeline_subscriber_interface_init (GcalTimelineSubscriberInterface *iface)
{
iface->get_range = gcal_dazzling_month_view_get_range;
iface->add_event = gcal_dazzling_month_view_add_event;
iface->update_event = gcal_dazzling_month_view_update_event;
iface->remove_event = gcal_dazzling_month_view_remove_event;
}
/*
* GcalView interface
*/
static GDateTime*
gcal_dazzling_month_view_get_date (GcalView *view)
{
GcalDazzlingMonthView *self = GCAL_DAZZLING_MONTH_VIEW (view);
return self->date;
}
static void
gcal_dazzling_month_view_set_date (GcalView *view,
GDateTime *date)
{
GcalDazzlingMonthView *self;
gboolean month_changed;
GCAL_ENTRY;
self = GCAL_DAZZLING_MONTH_VIEW (view);
month_changed = !self->date ||
!date ||
g_date_time_get_month (self->date) != g_date_time_get_month (date) ||
g_date_time_get_year (self->date) != g_date_time_get_year (date);
gcal_set_date_time (&self->date, date);
if (!month_changed)
GCAL_RETURN ();
#ifdef GCAL_ENABLE_TRACE
{
g_autofree gchar *new_date_string = g_date_time_format (date, "%x %X %z");
GCAL_TRACE_MSG ("New date: %s", new_date_string);
}
#endif
update_header_labels (self);
update_week_ranges (self);
gcal_timeline_subscriber_range_changed (GCAL_TIMELINE_SUBSCRIBER (view));
GCAL_EXIT;
}
static void
gcal_dazzling_month_view_clear_marks (GcalView *view)
{
GCAL_TODO ("gcal_dazzling_month_view_clear_marks");
}
static GList*
gcal_dazzling_month_view_get_children_by_uuid (GcalView *view,
GcalRecurrenceModType mod,
const gchar *uuid)
{
return filter_children_by_uid_and_modtype (GTK_WIDGET (view), mod, uuid);
}
static GDateTime*
gcal_dazzling_month_view_get_next_date (GcalView *view)
{
GcalDazzlingMonthView *self = GCAL_DAZZLING_MONTH_VIEW (view);
g_assert (self->date != NULL);
return g_date_time_add_months (self->date, 1);
}
static GDateTime*
gcal_dazzling_month_view_get_previous_date (GcalView *view)
{
GcalDazzlingMonthView *self = GCAL_DAZZLING_MONTH_VIEW (view);
g_assert (self->date != NULL);
return g_date_time_add_months (self->date, -1);
}
static void
gcal_view_interface_init (GcalViewInterface *iface)
{
iface->get_date = gcal_dazzling_month_view_get_date;
iface->set_date = gcal_dazzling_month_view_set_date;
iface->clear_marks = gcal_dazzling_month_view_clear_marks;
iface->get_children_by_uuid = gcal_dazzling_month_view_get_children_by_uuid;
iface->get_next_date = gcal_dazzling_month_view_get_next_date;
iface->get_previous_date = gcal_dazzling_month_view_get_previous_date;
}
/*
* GtkBuildable interface
*/
static GtkBuildableIface *parent_buildable_iface;
static void
gcal_dazzling_month_view_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type)
{
GcalDazzlingMonthView *self = GCAL_DAZZLING_MONTH_VIEW (buildable);
if (g_strcmp0 (type, "header") == 0)
{
self->header = GTK_WIDGET (child);
gtk_widget_set_parent (self->header, GTK_WIDGET (self));
}
else
{
parent_buildable_iface->add_child (buildable, builder, child, type);
}
}
static void
gtk_buildable_interface_init (GtkBuildableIface *iface)
{
parent_buildable_iface = g_type_interface_peek_parent (iface);
iface->add_child = gcal_dazzling_month_view_add_child;
}
/*
* GtkWidget overrides
*/
static void
gcal_dazzling_month_view_measure (GtkWidget *widget,
GtkOrientation orientation,
gint for_size,
gint *minimum,
gint *natural,
gint *minimum_baseline,
gint *natural_baseline)
{
GcalDazzlingMonthView *self;
gint natural_header_size;
gint minimum_header_size;
gint minimum_row_size;
gint natural_row_size;
self = GCAL_DAZZLING_MONTH_VIEW (widget);
gtk_widget_measure (self->header,
orientation,
for_size,
&minimum_header_size,
&natural_header_size,
NULL,
NULL);
for (guint i = 0; i < self->week_rows->len; i++)
{
GtkWidget *row;
gint row_minimum;
gint row_natural;
row = g_ptr_array_index (self->week_rows, i);
gtk_widget_measure (row,
orientation,
for_size,
&row_minimum,
&row_natural,
NULL,
NULL);
if (i == 0)
{
minimum_row_size = row_minimum;
natural_row_size = row_natural;
}
else
{
minimum_row_size = MIN (minimum_row_size, row_minimum);
natural_row_size = MIN (natural_row_size, row_natural);
}
}
if (minimum)
*minimum = minimum_header_size + minimum_row_size;
if (natural)
*natural = natural_header_size + natural_row_size;
if (minimum_baseline)
*minimum_baseline = -1;
if (natural_baseline)
*natural_baseline = -1;
}
static void
gcal_dazzling_month_view_size_allocate (GtkWidget *widget,
gint width,
gint height,
gint baseline)
{
GcalDazzlingMonthView *self;
gdouble row_scroll_offset;
gdouble row_height;
gdouble y_offset;
gint header_height;
gint grid_height;
self = GCAL_DAZZLING_MONTH_VIEW (widget);
gtk_widget_measure (self->header, GTK_ORIENTATION_VERTICAL, width, &header_height, NULL, NULL, NULL);
gtk_widget_allocate (self->header, width, header_height, baseline, NULL);
grid_height = height - header_height;
row_height = grid_height / (gdouble) N_ROWS_PER_PAGE;
row_scroll_offset = self->row_offset * row_height;
y_offset = header_height - row_scroll_offset - (grid_height * ((N_PAGES - 1) / 2.0));
for (guint i = 0; i < self->week_rows->len; i++)
{
GtkAllocation row_allocation;
GtkWidget *row;
row = g_ptr_array_index (self->week_rows, i);
#define ROW_Y(_i) (row_height * (_i) + y_offset)
row_allocation.x = 0;
row_allocation.y = round (ROW_Y (i));
row_allocation.width = width;
row_allocation.height = round (ROW_Y (i + 1)) - row_allocation.y;
#undef ROW_Y
gtk_widget_size_allocate (row, &row_allocation, baseline);
}
}
static void
gcal_dazzling_month_view_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
{
GcalDazzlingMonthView *self;
gint header_height;
gint height;
gint width;
self = GCAL_DAZZLING_MONTH_VIEW (widget);
/* Snapshot rows with a clip */
width = gtk_widget_get_width (widget);
height = gtk_widget_get_height (widget);
header_height = gtk_widget_get_height (self->header);
gtk_snapshot_push_clip (snapshot,
&GRAPHENE_RECT_INIT (0, header_height, width, height - header_height));
for (guint i = 0; i < self->week_rows->len; i++)
gtk_widget_snapshot_child (widget, g_ptr_array_index (self->week_rows, i), snapshot);
gtk_snapshot_pop (snapshot);
/* Snapshot header */
gtk_widget_snapshot_child (widget, self->header, snapshot);
}
/*
* GObject overrides
*/
static void
gcal_dazzling_month_view_dispose (GObject *object)
{
GcalDazzlingMonthView *self = GCAL_DAZZLING_MONTH_VIEW (object);
GCAL_ENTRY;
g_clear_pointer (&self->events2, g_hash_table_destroy);
g_clear_pointer (&self->events, gcal_range_tree_unref);
g_clear_object (&self->kinetic_scroll_animation);
g_clear_object (&self->row_offset_animation);
g_clear_pointer (&self->header, gtk_widget_unparent);
g_clear_pointer (&self->week_rows, g_ptr_array_unref);
G_OBJECT_CLASS (gcal_dazzling_month_view_parent_class)->dispose (object);
GCAL_EXIT;
}
static void
gcal_dazzling_month_view_finalize (GObject *object)
{
GcalDazzlingMonthView *self = (GcalDazzlingMonthView *)object;
gcal_clear_date_time (&self->date);
g_clear_object (&self->context);
G_OBJECT_CLASS (gcal_dazzling_month_view_parent_class)->finalize (object);
}
static void
gcal_dazzling_month_view_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GcalDazzlingMonthView *self = GCAL_DAZZLING_MONTH_VIEW (object);
switch (prop_id)
{
case PROP_DATE:
g_value_set_boxed (value, self->date);
break;
case PROP_CONTEXT:
g_value_set_object (value, self->context);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
gcal_dazzling_month_view_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GcalDazzlingMonthView *self = GCAL_DAZZLING_MONTH_VIEW (object);
switch (prop_id)
{
case PROP_DATE:
gcal_view_set_date (GCAL_VIEW (self), g_value_get_boxed (value));
break;
case PROP_CONTEXT:
g_assert (self->context == NULL);
self->context = g_value_dup_object (value);
for (gint i = 0; i < N_TOTAL_ROWS; i++)
gcal_month_view_row_set_context (g_ptr_array_index (self->week_rows, i), self->context);
g_object_notify (object, "context");
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
gcal_dazzling_month_view_class_init (GcalDazzlingMonthViewClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->dispose = gcal_dazzling_month_view_dispose;
object_class->finalize = gcal_dazzling_month_view_finalize;
object_class->get_property = gcal_dazzling_month_view_get_property;
object_class->set_property = gcal_dazzling_month_view_set_property;
widget_class->measure = gcal_dazzling_month_view_measure;
widget_class->size_allocate = gcal_dazzling_month_view_size_allocate;
widget_class->snapshot = gcal_dazzling_month_view_snapshot;
g_object_class_override_property (object_class, PROP_CONTEXT, "context");
g_object_class_override_property (object_class, PROP_DATE, "active-date");
gtk_widget_class_set_template_from_resource (widget_class, "/org/gnome/calendar/ui/views/gcal-dazzling-month-view.ui");
gtk_widget_class_bind_template_child (widget_class, GcalDazzlingMonthView, month_label);
gtk_widget_class_bind_template_child (widget_class, GcalDazzlingMonthView, year_label);
gtk_widget_class_bind_template_child_full (widget_class, "label_0", FALSE, G_STRUCT_OFFSET (GcalDazzlingMonthView, weekday_label[0]));
gtk_widget_class_bind_template_child_full (widget_class, "label_1", FALSE, G_STRUCT_OFFSET (GcalDazzlingMonthView, weekday_label[1]));
gtk_widget_class_bind_template_child_full (widget_class, "label_2", FALSE, G_STRUCT_OFFSET (GcalDazzlingMonthView, weekday_label[2]));
gtk_widget_class_bind_template_child_full (widget_class, "label_3", FALSE, G_STRUCT_OFFSET (GcalDazzlingMonthView, weekday_label[3]));
gtk_widget_class_bind_template_child_full (widget_class, "label_4", FALSE, G_STRUCT_OFFSET (GcalDazzlingMonthView, weekday_label[4]));
gtk_widget_class_bind_template_child_full (widget_class, "label_5", FALSE, G_STRUCT_OFFSET (GcalDazzlingMonthView, weekday_label[5]));
gtk_widget_class_bind_template_child_full (widget_class, "label_6", FALSE, G_STRUCT_OFFSET (GcalDazzlingMonthView, weekday_label[6]));
gtk_widget_class_bind_template_callback (widget_class, on_discrete_scroll_controller_scroll_cb);
gtk_widget_class_bind_template_callback (widget_class, on_scroll_controller_scroll_begin_cb);
gtk_widget_class_bind_template_callback (widget_class, on_scroll_controller_scroll_cb);
gtk_widget_class_bind_template_callback (widget_class, on_scroll_controller_scroll_end_cb);
gtk_widget_class_bind_template_callback (widget_class, on_scroll_controller_decelerate_cb);
gtk_widget_class_set_css_name (widget_class, "calendar-view");
}
static void
gcal_dazzling_month_view_init (GcalDazzlingMonthView *self)
{
g_autoptr (GDateTime) now = NULL;
self->events = gcal_range_tree_new_with_free_func (g_object_unref);
self->events2 = g_hash_table_new_full (g_direct_hash, g_direct_equal, g_object_unref, NULL);
gtk_widget_init_template (GTK_WIDGET (self));
update_weekday_labels (self);
self->week_rows = g_ptr_array_new_full (N_TOTAL_ROWS, (GDestroyNotify) gtk_widget_unparent);
for (gint i = 0; i < N_TOTAL_ROWS; i++)
{
GtkWidget *row = gcal_month_view_row_new ();
gtk_widget_set_parent (row, GTK_WIDGET (self));
g_ptr_array_add (self->week_rows, row);
}
gtk_widget_insert_after (self->header, GTK_WIDGET (self), NULL);
now = g_date_time_new_now_local ();
gcal_view_set_date (GCAL_VIEW (self), now);
}
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