/* * gcal-month-view.c * * Copyright 2023 Georges Basile Stavracas Neto * * 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 . * * SPDX-License-Identifier: GPL-3.0-or-later */ #define G_LOG_DOMAIN "GcalMonthView" #include "config.h" #include "gcal-context.h" #include "gcal-debug.h" #include "gcal-month-cell.h" #include "gcal-month-popover.h" #include "gcal-month-view.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 #include #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 _GcalMonthView { GtkWidget parent; GtkWidget *header; GtkWidget *month_label; GtkWidget *year_label; GtkWidget *weekday_label[7]; GtkEventController *motion_controller; GPtrArray *week_rows; GHashTable *events; struct { GtkWidget *popover; GcalMonthViewRow *row; GtkWidget *relative_to; } overflow; struct { GDateTime *start; GDateTime *end; } selection; /* 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 (GcalMonthView, gcal_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 allocate_overflow_popover (GcalMonthView *self, gint width, gint height, gint baseline) { graphene_point_t origin, end; GtkAllocation popover_allocation; GtkAllocation allocation; gint popover_min_width; gint popover_nat_width; gint popover_height; gint popover_width; gint header_height; g_assert (self->overflow.relative_to != NULL); header_height = gtk_widget_get_height (self->header); if (!gtk_widget_compute_point (self->overflow.relative_to, GTK_WIDGET (self), &GRAPHENE_POINT_INIT (0, 0), &origin)) g_assert_not_reached (); if (!gtk_widget_compute_point (self->overflow.relative_to, GTK_WIDGET (self), &GRAPHENE_POINT_INIT (gtk_widget_get_width (self->overflow.relative_to), gtk_widget_get_height (self->overflow.relative_to)), &end)) g_assert_not_reached (); allocation = (GtkAllocation) { .x = origin.x, .y = origin.y, .width = end.x - origin.x, .height = end.y - origin.y, }; gtk_widget_measure (GTK_WIDGET (self->overflow.popover), GTK_ORIENTATION_HORIZONTAL, -1, &popover_min_width, &popover_nat_width, NULL, NULL); gtk_widget_measure (GTK_WIDGET (self->overflow.popover), GTK_ORIENTATION_VERTICAL, -1, NULL, &popover_height, NULL, NULL); popover_width = CLAMP (popover_nat_width, popover_min_width, allocation.width * 1.5); popover_height = CLAMP (popover_height, allocation.height * 1.5, height); popover_allocation = (GtkAllocation) { .x = MAX (0, allocation.x - (popover_width - allocation.width) / 2.0), .y = MAX (header_height, allocation.y - (popover_height - allocation.height) / 2.0), .width = popover_width, .height = popover_height, }; if (popover_allocation.x + popover_allocation.width > width) popover_allocation.x -= (popover_allocation.x + popover_allocation.width - width); if (popover_allocation.y + popover_allocation.height > height) popover_allocation.y -= (popover_allocation.y + popover_allocation.height - height); gtk_widget_size_allocate (self->overflow.popover, &popover_allocation, baseline); } static void update_header_labels (GcalMonthView *self) { g_autoptr (GcalRange) first_visible_row_range = NULL; g_autoptr (GcalRange) last_visible_row_range = NULL; g_autoptr (GDateTime) last_visible_date_exclusive = NULL; g_autoptr (GDateTime) first_visible_date = NULL; g_autoptr (GDateTime) last_visible_date = NULL; g_autofree gchar *month_string = NULL; g_autofree gchar *year_string = NULL; GtkWidget *first_visible_row; GtkWidget *last_visible_row; gint first_visible_row_index; first_visible_row_index = N_ROWS_PER_PAGE * (N_PAGES - 1) / 2; first_visible_row = g_ptr_array_index (self->week_rows, first_visible_row_index); first_visible_row_range = gcal_month_view_row_get_range (GCAL_MONTH_VIEW_ROW (first_visible_row)); first_visible_date = gcal_range_get_start (first_visible_row_range); last_visible_row = g_ptr_array_index (self->week_rows, first_visible_row_index + N_ROWS_PER_PAGE - 1); last_visible_row_range = gcal_month_view_row_get_range (GCAL_MONTH_VIEW_ROW (last_visible_row)); last_visible_date_exclusive = gcal_range_get_end (last_visible_row_range); last_visible_date = g_date_time_add_seconds (last_visible_date_exclusive, -1); if (g_date_time_get_month (first_visible_date) == g_date_time_get_month (last_visible_date)) { month_string = g_strdup_printf ("%s", gcal_get_month_name (g_date_time_get_month (first_visible_date) - 1)); } else { month_string = g_strdup_printf("%s–%s", gcal_get_month_name (g_date_time_get_month (first_visible_date) -1), gcal_get_month_name (g_date_time_get_month (last_visible_date) - 1)); } if (g_date_time_get_year (first_visible_date) == g_date_time_get_year (last_visible_date)) { year_string = g_strdup_printf ("%d", g_date_time_get_year (first_visible_date)); } else { year_string = g_strdup_printf ("%d–%d", g_date_time_get_year (first_visible_date), g_date_time_get_year (last_visible_date)); } gtk_label_set_label (GTK_LABEL (self->month_label), month_string); gtk_label_set_label (GTK_LABEL (self->year_label), year_string); } static inline void update_weekday_labels (GcalMonthView *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 cancel_deceleration (GcalMonthView *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 (GcalMonthView *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 (GcalMonthView *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 add_cached_events_to_row (GcalMonthView *self, GcalMonthViewRow *row) { g_autoptr (GcalRange) row_range = NULL; GHashTableIter iter; GcalEvent *event; row_range = gcal_month_view_row_get_range (row); g_hash_table_iter_init (&iter, self->events); while (g_hash_table_iter_next (&iter, (gpointer *) &event, NULL)) { GcalRangeOverlap overlap = gcal_range_calculate_overlap (row_range, gcal_event_get_range (event), NULL); if (overlap == GCAL_RANGE_NO_OVERLAP) continue; gcal_month_view_row_add_event (row, event); } } static inline void maybe_popdown_overflow_popover (GcalMonthView *self) { uint32_t row_index; gboolean found; if (!self->overflow.row) return; found = g_ptr_array_find (self->week_rows, self->overflow.row, &row_index); g_assert (found); if (floor (row_index / (gdouble) N_ROWS_PER_PAGE) != floor (N_PAGES / 2.0)) gcal_month_popover_popdown (GCAL_MONTH_POPOVER (self->overflow.popover)); } static void move_bottom_row_to_top (GcalMonthView *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_start (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 *first_row_range_str = gcal_range_to_string (first_row_range); g_autofree gchar *new_range_str = gcal_range_to_string (new_range); GCAL_TRACE_MSG ("Moved bottom row to top, new range: %s (first row range: %s)", new_range_str, first_row_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); add_cached_events_to_row (self, GCAL_MONTH_VIEW_ROW (last_row)); } static void move_top_row_to_bottom (GcalMonthView *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 *last_row_range_str = gcal_range_to_string (last_row_range); g_autofree gchar *new_range_str = gcal_range_to_string (new_range); GCAL_TRACE_MSG ("Moved top row to bottom, new range: %s (last row range: %s)", new_range_str, last_row_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); add_cached_events_to_row (self, GCAL_MONTH_VIEW_ROW (first_row)); } static inline void dump_row_ranges (GcalMonthView *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 void update_week_ranges (GcalMonthView *self, GDateTime *new_date) { g_autoptr (GcalRange) current_range = NULL; g_autoptr (GDateTime) current_date = NULL; 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; current_date = g_steal_pointer (&self->date); if (current_date) current_range = gcal_timeline_subscriber_get_range (GCAL_TIMELINE_SUBSCRIBER (self)); gcal_set_date_time (&self->date, new_date); if (current_range && gcal_range_contains_datetime (current_range, new_date)) { g_autoptr (GcalRange) row_range = NULL; GcalMonthViewRow *row; gint diff; diff = g_date_time_compare (new_date, current_date); row = g_ptr_array_index (self->week_rows, n_weeks_before); row_range = gcal_month_view_row_get_range (row); while (!gcal_range_contains_datetime (row_range, new_date)) { if (diff > 0) move_top_row_to_bottom (self); else move_bottom_row_to_top (self); g_clear_pointer (&row_range, gcal_range_unref); row = g_ptr_array_index (self->week_rows, n_weeks_before); row_range = gcal_month_view_row_get_range (row); } } else { 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); } } maybe_popdown_overflow_popover (self); dump_row_ranges (self); } static void update_row_visuals (GcalMonthView *self) { g_autoptr (GcalRange) first_visible_row_range = NULL; g_autoptr (GcalRange) last_visible_row_range = NULL; g_autoptr (GcalRange) union_range = NULL; g_autoptr (GDateTime) start = NULL; g_autoptr (GDateTime) middle = NULL; g_autoptr (GDateTime) end = NULL; GcalMonthViewRow *first_visible_row; GcalMonthViewRow *last_visible_row; gint first_visible_row_index; gint last_visible_row_index; first_visible_row_index = N_ROWS_PER_PAGE * (N_PAGES - 1) / 2; first_visible_row = g_ptr_array_index (self->week_rows, first_visible_row_index); first_visible_row_range = gcal_month_view_row_get_range (first_visible_row); last_visible_row_index = first_visible_row_index + N_ROWS_PER_PAGE - 1; last_visible_row = g_ptr_array_index (self->week_rows, last_visible_row_index); last_visible_row_range = gcal_month_view_row_get_range (last_visible_row); union_range = gcal_range_union (first_visible_row_range, last_visible_row_range); start = gcal_range_get_start (union_range); end = gcal_range_get_end (union_range); middle = g_date_time_add_days (start, gcal_date_time_compare_date (end, start) / 2); for (gint i = 0; i < self->week_rows->len; i++) { GcalMonthViewRow *row = g_ptr_array_index (self->week_rows, i); gcal_month_view_row_update_style_for_date (row, middle); } } static inline gint get_grid_height (GcalMonthView *self) { return gtk_widget_get_height (GTK_WIDGET (self)) - gtk_widget_get_height (self->header); } static void offset_and_shuffle_rows (GcalMonthView *self, gdouble dy) { GCAL_ENTRY; self->row_offset += dy; 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; } maybe_popdown_overflow_popover (self); update_active_date (self); dump_row_ranges (self); } gtk_widget_queue_allocate (GTK_WIDGET (self)); GCAL_EXIT; } static void offset_and_shuffle_rows_by_pixels (GcalMonthView *self, gdouble dy_pixels) { gdouble row_height; gint grid_height; GCAL_ENTRY; grid_height = get_grid_height (self); row_height = grid_height / (gdouble) N_ROWS_PER_PAGE; offset_and_shuffle_rows (self, dy_pixels / row_height); GCAL_EXIT; } static void animate_row_offset_cb (gdouble value, gpointer user_data) { GcalMonthView *self = GCAL_MONTH_VIEW (user_data); self->row_offset = value; gtk_widget_queue_allocate (GTK_WIDGET (self)); } static void on_row_offset_animation_done (AdwAnimation *animation, GcalMonthView *self) { gtk_widget_remove_css_class (GTK_WIDGET (self), "scrolling"); cancel_row_offset_animation (self); self->row_offset = 0.0; gtk_widget_queue_allocate (GTK_WIDGET (self)); } static void snap_to_top_row (GcalMonthView *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; } static void animate_row_scroll_cb (gdouble value, gpointer user_data) { GcalMonthView *self = GCAL_MONTH_VIEW (user_data); gdouble *last_offset_location; gdouble dy; last_offset_location = g_object_get_data (G_OBJECT (self->row_offset_animation), "last-offset"); g_assert (last_offset_location != NULL); dy = value - *last_offset_location; offset_and_shuffle_rows (self, dy); *last_offset_location = value; } static void animate_row_scroll (GcalMonthView *self, gint n_rows) { GCAL_ENTRY; g_assert (n_rows != 0); update_active_date (self); dump_row_ranges (self); if (!self->row_offset_animation) { g_autoptr (AdwAnimationTarget) animation_target = NULL; g_autofree gdouble *last_offset_location = NULL; gboolean animate; g_object_get (gtk_widget_get_settings (GTK_WIDGET (self)), "gtk-enable-animations", &animate, NULL); animation_target = adw_callback_animation_target_new (animate_row_scroll_cb, self, NULL); self->row_offset_animation = adw_timed_animation_new (GTK_WIDGET (self), self->row_offset, n_rows, animate ? 150 : 100, // ms g_steal_pointer (&animation_target)); adw_timed_animation_set_easing (ADW_TIMED_ANIMATION (self->row_offset_animation), ADW_EASE_OUT_QUAD); adw_animation_set_follow_enable_animations_setting (self->row_offset_animation, FALSE); g_signal_connect (self->row_offset_animation, "done", G_CALLBACK (on_row_offset_animation_done), self); last_offset_location = g_malloc (sizeof (gdouble)); *last_offset_location = self->row_offset; g_object_set_data_full (G_OBJECT (self->row_offset_animation), "last-offset", g_steal_pointer (&last_offset_location), g_free); adw_animation_play (self->row_offset_animation); } else { gdouble target_value; target_value = adw_timed_animation_get_value_to (ADW_TIMED_ANIMATION (self->row_offset_animation)); adw_animation_pause (self->row_offset_animation); adw_timed_animation_set_value_to (ADW_TIMED_ANIMATION (self->row_offset_animation), target_value + n_rows); adw_animation_play (self->row_offset_animation); } GCAL_EXIT; } static void update_selection_range (GcalMonthView *self) { g_autoptr (GcalRange) selection_range = NULL; GDateTime *selection_start; GDateTime *selection_end; selection_start = self->selection.start; selection_end = self->selection.end; if (selection_start) { if (!selection_end) selection_end = selection_start; /* Swap dates if end is before start */ if (gcal_date_time_compare_date (selection_start, selection_end) > 0) { GDateTime *aux = selection_end; selection_end = selection_start; selection_start = aux; } selection_range = gcal_range_new (selection_start, selection_end, GCAL_RANGE_DATE_ONLY); } else { g_assert (selection_end == NULL); selection_range = NULL; } for (gint i = 0; i < self->week_rows->len; i++) { GcalMonthViewRow *row = g_ptr_array_index (self->week_rows, i); gcal_month_view_row_update_selection (row, selection_range); } } /* * Callbacks */ static void on_click_gesture_pressed_cb (GtkGestureClick *click_gesture, gint n_press, gdouble x, gdouble y, GcalMonthView *self) { GtkWidget *widget_at_position; GtkWidget *day_cell; GCAL_ENTRY; widget_at_position = gtk_widget_pick (GTK_WIDGET (self), x, y, GTK_PICK_DEFAULT); day_cell = gtk_widget_get_ancestor (widget_at_position, GCAL_TYPE_MONTH_CELL); if (!day_cell) GCAL_RETURN (); g_assert (GCAL_IS_MONTH_CELL (day_cell)); gcal_clear_date_time (&self->selection.start); self->selection.start = g_date_time_ref (gcal_month_cell_get_date (GCAL_MONTH_CELL (day_cell))); gtk_event_controller_set_propagation_phase (self->motion_controller, GTK_PHASE_BUBBLE); update_selection_range (self); GCAL_EXIT; } static void on_click_gesture_released_cb (GtkGestureClick *click_gesture, gint n_press, gdouble x, gdouble y, GcalMonthView *self) { g_autoptr (GcalRange) selection_range = NULL; g_autoptr (GDateTime) selection_start = NULL; g_autoptr (GDateTime) selection_end = NULL; GtkWidget *widget_at_position; GCAL_ENTRY; gtk_event_controller_set_propagation_phase (self->motion_controller, GTK_PHASE_NONE); widget_at_position = gtk_widget_pick (GTK_WIDGET (self), x, y, GTK_PICK_DEFAULT); if (!self->selection.start || !widget_at_position || !gtk_widget_get_ancestor (widget_at_position, GCAL_TYPE_MONTH_VIEW_ROW)) { gcal_view_clear_marks (GCAL_VIEW (self)); GCAL_RETURN (); } selection_start = self->selection.start; selection_end = self->selection.end ?: selection_start; /* Swap dates if end is before start */ if (gcal_date_time_compare_date (selection_start, selection_end) > 0) { GDateTime *aux = selection_end; selection_end = selection_start; selection_start = aux; } selection_start = g_date_time_ref (selection_start); selection_end = g_date_time_add_days (selection_end, 1); selection_range = gcal_range_new (selection_start, selection_end, GCAL_RANGE_DEFAULT); gcal_view_create_event (GCAL_VIEW (self), selection_range, x, y); GCAL_EXIT; } static void on_motion_controller_motion_cb (GtkEventControllerMotion *motion_controller, gdouble x, gdouble y, GcalMonthView *self) { GtkWidget *widget_at_position; GtkWidget *day_cell; GtkWidget *row; GCAL_ENTRY; widget_at_position = gtk_widget_pick (GTK_WIDGET (self), x, y, GTK_PICK_DEFAULT); if (!widget_at_position) GCAL_RETURN (); row = gtk_widget_get_ancestor (widget_at_position, GCAL_TYPE_MONTH_VIEW_ROW); if (!row) GCAL_RETURN (); day_cell = gcal_month_view_row_get_cell_at_x (GCAL_MONTH_VIEW_ROW (row), x); g_assert (day_cell != NULL); g_assert (GCAL_IS_MONTH_CELL (day_cell)); gcal_clear_date_time (&self->selection.end); self->selection.end = g_date_time_ref (gcal_month_cell_get_date (GCAL_MONTH_CELL (day_cell))); update_selection_range (self); GCAL_EXIT; } static void on_event_widget_activated_cb (GcalMonthViewRow *row, GcalEventWidget *event_widget, GcalMonthView *self) { gcal_view_event_activated (GCAL_VIEW (self), event_widget); } static void on_scroll_controller_scroll_begin_cb (GtkEventControllerScroll *scroll_controller, GcalMonthView *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, GcalMonthView *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_by_pixels (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, GcalMonthView *self) { GdkEvent *current_event; gint n_rows = 0; 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: n_rows = -1; break; case GDK_SCROLL_DOWN: n_rows = 1; break; default: GCAL_RETURN (GDK_EVENT_PROPAGATE); } gtk_widget_add_css_class (GTK_WIDGET (self), "scrolling"); maybe_popdown_overflow_popover (self); cancel_row_offset_animation (self); cancel_deceleration (self); animate_row_scroll (self, n_rows); GCAL_RETURN (GDK_EVENT_STOP); } static void on_scroll_controller_scroll_end_cb (GtkEventControllerScroll *scroll_controller, GcalMonthView *self) { GCAL_ENTRY; snap_to_top_row (self); GCAL_EXIT; } static void decelerate_scroll_cb (gdouble value, gpointer user_data) { GcalMonthView *self = GCAL_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_by_pixels (self, dy); else adw_animation_skip (self->kinetic_scroll_animation); } static void on_kinetic_scroll_done_cb (AdwAnimation *animation, GcalMonthView *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, GcalMonthView *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); adw_animation_set_follow_enable_animations_setting (self->kinetic_scroll_animation, FALSE); 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; } static void on_month_row_show_overflow_cb (GcalMonthViewRow *row, GcalMonthCell *cell, GcalMonthView *self) { GcalMonthPopover *popover; GCAL_ENTRY; popover = GCAL_MONTH_POPOVER (self->overflow.popover); self->overflow.row = row; self->overflow.relative_to = GTK_WIDGET (cell); gcal_month_popover_set_date (popover, gcal_month_cell_get_date (cell)); gcal_month_popover_popup (popover); /* FIXME: here we forcefully disable selection, but I wonder if there's a better * way to do it. */ gtk_event_controller_set_propagation_phase (self->motion_controller, GTK_PHASE_NONE); gcal_view_clear_marks (GCAL_VIEW (self)); GCAL_EXIT; } static void on_month_popover_event_activated_cb (GcalMonthPopover *month_popover, GcalEventWidget *event_widget, GcalMonthViewRow *self) { gcal_view_event_activated (GCAL_VIEW (self), event_widget); } /* * GcalTimelineSubscriber iface */ static GcalRange* gcal_month_view_get_range (GcalTimelineSubscriber *subscriber) { g_autoptr (GcalRange) first_row_range = NULL; g_autoptr (GcalRange) last_row_range = NULL; GcalMonthView *self; self = GCAL_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_month_view_add_event (GcalTimelineSubscriber *subscriber, GcalEvent *event) { GcalMonthView *self; GCAL_ENTRY; g_assert (event != NULL); self = GCAL_MONTH_VIEW (subscriber); if (!g_hash_table_add (self->events, 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) { gcal_month_view_row_add_event (row, event); } else { if (position == GCAL_RANGE_AFTER) break; } } GCAL_EXIT; } static void gcal_month_view_remove_event (GcalTimelineSubscriber *subscriber, GcalEvent *event) { g_autoptr (GcalEvent) owned_event = NULL; GcalMonthView *self; GCAL_ENTRY; g_assert (event != NULL); self = GCAL_MONTH_VIEW (subscriber); /* Keep event alive while removing it */ owned_event = g_object_ref (event); if (!g_hash_table_remove (self->events, 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) { gcal_month_view_row_remove_event (row, event); } else { if (position == GCAL_RANGE_AFTER) break; } } GCAL_EXIT; } static void gcal_month_view_update_event (GcalTimelineSubscriber *subscriber, GcalEvent *old_event, GcalEvent *event) { GCAL_ENTRY; g_assert (event != NULL); gcal_month_view_remove_event (subscriber, old_event); gcal_month_view_add_event (subscriber, event); GCAL_EXIT; } static void gcal_timeline_subscriber_interface_init (GcalTimelineSubscriberInterface *iface) { iface->get_range = gcal_month_view_get_range; iface->add_event = gcal_month_view_add_event; iface->update_event = gcal_month_view_update_event; iface->remove_event = gcal_month_view_remove_event; } /* * GcalView interface */ static GDateTime* gcal_month_view_get_date (GcalView *view) { GcalMonthView *self = GCAL_MONTH_VIEW (view); return self->date; } static void gcal_month_view_set_date (GcalView *view, GDateTime *date) { GcalMonthView *self; gboolean week_changed; GCAL_ENTRY; self = GCAL_MONTH_VIEW (view); week_changed = !self->date || !date || g_date_time_get_month (self->date) != g_date_time_get_month (date) || g_date_time_get_week_of_year (self->date) != g_date_time_get_week_of_year (date); if (!week_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_week_ranges (self, date); update_header_labels (self); update_row_visuals (self); gcal_timeline_subscriber_range_changed (GCAL_TIMELINE_SUBSCRIBER (view)); GCAL_EXIT; } static void gcal_month_view_clear_marks (GcalView *view) { GcalMonthView *self; GCAL_ENTRY; self = GCAL_MONTH_VIEW (view); gcal_clear_date_time (&self->selection.start); gcal_clear_date_time (&self->selection.end); update_selection_range (self); GCAL_EXIT; } static GList* gcal_month_view_get_children_by_uuid (GcalView *view, GcalRecurrenceModType mod, const gchar *uuid) { g_autoptr (GList) children = NULL; GcalMonthView *self; GCAL_ENTRY; self = GCAL_MONTH_VIEW (view); for (guint i = 0; i < self->week_rows->len; i++) { g_autoptr (GList) row_children = NULL; GcalMonthViewRow *row; row = g_ptr_array_index (self->week_rows, i); row_children = gcal_month_view_row_get_children_by_uuid (row, mod, uuid); children = g_list_concat (children, g_steal_pointer (&row_children)); } GCAL_RETURN (g_steal_pointer (&children)); } static GDateTime* gcal_month_view_get_next_date (GcalView *view) { GcalMonthView *self = GCAL_MONTH_VIEW (view); g_assert (self->date != NULL); return g_date_time_add_months (self->date, 1); } static GDateTime* gcal_month_view_get_previous_date (GcalView *view) { GcalMonthView *self = GCAL_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_month_view_get_date; iface->set_date = gcal_month_view_set_date; iface->clear_marks = gcal_month_view_clear_marks; iface->get_children_by_uuid = gcal_month_view_get_children_by_uuid; iface->get_next_date = gcal_month_view_get_next_date; iface->get_previous_date = gcal_month_view_get_previous_date; } /* * GtkBuildable interface */ static GtkBuildableIface *parent_buildable_iface; static void gcal_month_view_add_child (GtkBuildable *buildable, GtkBuilder *builder, GObject *child, const gchar *type) { GcalMonthView *self = GCAL_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_month_view_add_child; } /* * GtkWidget overrides */ static void gcal_month_view_measure (GtkWidget *widget, GtkOrientation orientation, gint for_size, gint *minimum, gint *natural, gint *minimum_baseline, gint *natural_baseline) { GcalMonthView *self; gint natural_header_size; gint minimum_header_size; gint minimum_row_size; gint natural_row_size; self = GCAL_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_month_view_size_allocate (GtkWidget *widget, gint width, gint height, gint baseline) { GcalMonthView *self; gdouble row_scroll_offset; gdouble row_height; gdouble y_offset; gint header_height; gint grid_height; self = GCAL_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); } /* Overflow popover */ if (gtk_widget_should_layout (self->overflow.popover)) allocate_overflow_popover (self, width, height, baseline); } static void gcal_month_view_snapshot (GtkWidget *widget, GtkSnapshot *snapshot) { GcalMonthView *self; gint header_height; gint height; gint width; self = GCAL_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); /* Overflow popover */ gtk_widget_snapshot_child (widget, self->overflow.popover, snapshot); } /* * GObject overrides */ static void gcal_month_view_dispose (GObject *object) { GcalMonthView *self = GCAL_MONTH_VIEW (object); GCAL_ENTRY; g_clear_pointer (&self->events, g_hash_table_destroy); g_clear_object (&self->kinetic_scroll_animation); g_clear_object (&self->row_offset_animation); g_clear_pointer (&self->overflow.popover, gtk_widget_unparent); g_clear_pointer (&self->header, gtk_widget_unparent); g_clear_pointer (&self->week_rows, g_ptr_array_unref); G_OBJECT_CLASS (gcal_month_view_parent_class)->dispose (object); GCAL_EXIT; } static void gcal_month_view_finalize (GObject *object) { GcalMonthView *self = (GcalMonthView *)object; gcal_clear_date_time (&self->selection.start); gcal_clear_date_time (&self->selection.end); gcal_clear_date_time (&self->date); g_clear_object (&self->context); G_OBJECT_CLASS (gcal_month_view_parent_class)->finalize (object); } static void gcal_month_view_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GcalMonthView *self = GCAL_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_month_view_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GcalMonthView *self = GCAL_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_month_view_class_init (GcalMonthViewClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass); object_class->dispose = gcal_month_view_dispose; object_class->finalize = gcal_month_view_finalize; object_class->get_property = gcal_month_view_get_property; object_class->set_property = gcal_month_view_set_property; widget_class->measure = gcal_month_view_measure; widget_class->size_allocate = gcal_month_view_size_allocate; widget_class->snapshot = gcal_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-month-view.ui"); gtk_widget_class_bind_template_child (widget_class, GcalMonthView, month_label); gtk_widget_class_bind_template_child (widget_class, GcalMonthView, motion_controller); gtk_widget_class_bind_template_child (widget_class, GcalMonthView, year_label); gtk_widget_class_bind_template_child_full (widget_class, "label_0", FALSE, G_STRUCT_OFFSET (GcalMonthView, weekday_label[0])); gtk_widget_class_bind_template_child_full (widget_class, "label_1", FALSE, G_STRUCT_OFFSET (GcalMonthView, weekday_label[1])); gtk_widget_class_bind_template_child_full (widget_class, "label_2", FALSE, G_STRUCT_OFFSET (GcalMonthView, weekday_label[2])); gtk_widget_class_bind_template_child_full (widget_class, "label_3", FALSE, G_STRUCT_OFFSET (GcalMonthView, weekday_label[3])); gtk_widget_class_bind_template_child_full (widget_class, "label_4", FALSE, G_STRUCT_OFFSET (GcalMonthView, weekday_label[4])); gtk_widget_class_bind_template_child_full (widget_class, "label_5", FALSE, G_STRUCT_OFFSET (GcalMonthView, weekday_label[5])); gtk_widget_class_bind_template_child_full (widget_class, "label_6", FALSE, G_STRUCT_OFFSET (GcalMonthView, weekday_label[6])); gtk_widget_class_bind_template_callback (widget_class, on_click_gesture_pressed_cb); gtk_widget_class_bind_template_callback (widget_class, on_click_gesture_released_cb); gtk_widget_class_bind_template_callback (widget_class, on_discrete_scroll_controller_scroll_cb); gtk_widget_class_bind_template_callback (widget_class, on_motion_controller_motion_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_month_view_init (GcalMonthView *self) { g_autoptr (GDateTime) now = NULL; self->events = 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 (); g_signal_connect (row, "event-activated", G_CALLBACK (on_event_widget_activated_cb), self); g_signal_connect (row, "show-overflow", G_CALLBACK (on_month_row_show_overflow_cb), self); gtk_widget_set_parent (row, GTK_WIDGET (self)); g_ptr_array_add (self->week_rows, row); } gtk_widget_insert_before (self->header, GTK_WIDGET (self), NULL); /* Overflow popover */ self->overflow.popover = gcal_month_popover_new (); g_object_bind_property (self, "context", self->overflow.popover, "context", G_BINDING_DEFAULT); g_signal_connect (self->overflow.popover, "event-activated", G_CALLBACK (on_month_popover_event_activated_cb), self); gtk_widget_set_parent (self->overflow.popover, GTK_WIDGET (self)); now = g_date_time_new_now_local (); gcal_view_set_date (GCAL_VIEW (self), now); }