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Diffstat (limited to 'fastiv-browser.c')
| -rw-r--r-- | fastiv-browser.c | 1069 |
1 files changed, 0 insertions, 1069 deletions
diff --git a/fastiv-browser.c b/fastiv-browser.c deleted file mode 100644 index 78607ed..0000000 --- a/fastiv-browser.c +++ /dev/null @@ -1,1069 +0,0 @@ -// -// fastiv-browser.c: fast image viewer - filesystem browser widget -// -// Copyright (c) 2021, Přemysl Eric Janouch <p@janouch.name> -// -// Permission to use, copy, modify, and/or distribute this software for any -// purpose with or without fee is hereby granted. -// -// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES -// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF -// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY -// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES -// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION -// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN -// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. -// - -#include <math.h> -#include <pixman.h> - -#include "fastiv-browser.h" -#include "fastiv-io.h" -#include "fastiv-view.h" - -// --- Widget ------------------------------------------------------------------ -// _________________________________ -// │ p a d d i n g -// │ p ╭───────────────────╮ s ╭┄┄┄┄┄ -// │ a │ glow border ┊ │ p ┊ -// │ d │ ┄ ╔═══════════╗ ┄ │ a ┊ -// │ d │ ║ thumbnail ║ │ c ┊ ... -// │ i │ ┄ ╚═══════════╝ ┄ │ i ┊ -// │ n │ ┊ glow border │ n ┊ -// │ g ╰───────────────────╯ g ╰┄┄┄┄┄ -// │ s p a c i n g -// │ ╭┄┄┄┄┄┄┄┄┄┄┄┄╮ ╭┄┄┄┄┄┄┄┄┄┄┄┄ -// -// The glow is actually a glowing margin, the border is rendered in two parts. -// - -struct _FastivBrowser { - GtkWidget parent_instance; - - FastivIoThumbnailSize item_size; ///< Thumbnail size - int item_height; ///< Thumbnail height in pixels - int item_spacing; ///< Space between items in pixels - - GArray *entries; ///< [Entry] - GArray *layouted_rows; ///< [Row] - int selected; - - GdkCursor *pointer; ///< Cached pointer cursor - cairo_surface_t *glow; ///< CAIRO_FORMAT_A8 mask - int item_border_x; ///< L/R .item margin + border - int item_border_y; ///< T/B .item margin + border -}; - -typedef struct entry Entry; -typedef struct item Item; -typedef struct row Row; - -static const double g_permitted_width_multiplier = 2; - -// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -struct entry { - char *uri; ///< GIO URI - cairo_surface_t *thumbnail; ///< Prescaled thumbnail - GIcon *icon; ///< If no thumbnail, use this icon -}; - -static void -entry_free(Entry *self) -{ - g_free(self->uri); - g_clear_pointer(&self->thumbnail, cairo_surface_destroy); - g_clear_object(&self->icon); -} - -// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -struct item { - const Entry *entry; - int x_offset; ///< Offset within the row -}; - -struct row { - Item *items; ///< Ends with a NULL entry - int x_offset; ///< Start position outside borders - int y_offset; ///< Start position inside borders -}; - -static void -row_free(Row *self) -{ - g_free(self->items); -} - -// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -static void -append_row(FastivBrowser *self, int *y, int x, GArray *items_array) -{ - if (self->layouted_rows->len) - *y += self->item_spacing; - - *y += self->item_border_y; - g_array_append_val(self->layouted_rows, ((Row) { - .items = g_array_steal(items_array, NULL), - .x_offset = x, - .y_offset = *y, - })); - - // Not trying to pack them vertically, but this would be the place to do it. - *y += self->item_height; - *y += self->item_border_y; -} - -static int -relayout(FastivBrowser *self, int width) -{ - GtkWidget *widget = GTK_WIDGET(self); - GtkStyleContext *style = gtk_widget_get_style_context(widget); - - GtkBorder padding = {}; - gtk_style_context_get_padding(style, GTK_STATE_FLAG_NORMAL, &padding); - int available_width = width - padding.left - padding.right; - - g_array_set_size(self->layouted_rows, 0); - - GArray *items = g_array_new(TRUE, TRUE, sizeof(Item)); - int x = 0, y = padding.top; - for (guint i = 0; i < self->entries->len; i++) { - const Entry *entry = &g_array_index(self->entries, Entry, i); - if (!entry->thumbnail) - continue; - - int width = cairo_image_surface_get_width(entry->thumbnail) + - 2 * self->item_border_x; - if (!items->len) { - // Just insert it, whether or not there's any space. - } else if (x + self->item_spacing + width <= available_width) { - x += self->item_spacing; - } else { - append_row(self, &y, - padding.left + MAX(0, available_width - x) / 2, items); - x = 0; - } - - g_array_append_val(items, - ((Item) {.entry = entry, .x_offset = x + self->item_border_x})); - x += width; - } - if (items->len) { - append_row(self, &y, - padding.left + MAX(0, available_width - x) / 2, items); - } - - g_array_free(items, TRUE); - return y + padding.bottom; -} - -static void -draw_outer_border(FastivBrowser *self, cairo_t *cr, int width, int height) -{ - int offset_x = cairo_image_surface_get_width(self->glow); - int offset_y = cairo_image_surface_get_height(self->glow); - cairo_pattern_t *mask = cairo_pattern_create_for_surface(self->glow); - cairo_matrix_t matrix; - - cairo_pattern_set_extend(mask, CAIRO_EXTEND_PAD); - cairo_save(cr); - cairo_translate(cr, -offset_x, -offset_y); - cairo_rectangle(cr, 0, 0, offset_x + width, offset_y + height); - cairo_clip(cr); - cairo_mask(cr, mask); - cairo_restore(cr); - cairo_save(cr); - cairo_translate(cr, width + offset_x, height + offset_y); - cairo_rectangle(cr, 0, 0, -offset_x - width, -offset_y - height); - cairo_clip(cr); - cairo_scale(cr, -1, -1); - cairo_mask(cr, mask); - cairo_restore(cr); - - cairo_pattern_set_extend(mask, CAIRO_EXTEND_NONE); - cairo_matrix_init_scale(&matrix, -1, 1); - cairo_matrix_translate(&matrix, -width - offset_x, offset_y); - cairo_pattern_set_matrix(mask, &matrix); - cairo_mask(cr, mask); - cairo_matrix_init_scale(&matrix, 1, -1); - cairo_matrix_translate(&matrix, offset_x, -height - offset_y); - cairo_pattern_set_matrix(mask, &matrix); - cairo_mask(cr, mask); - - cairo_pattern_destroy(mask); -} - -static GdkRectangle -item_extents(FastivBrowser *self, const Item *item, const Row *row) -{ - int width = cairo_image_surface_get_width(item->entry->thumbnail); - int height = cairo_image_surface_get_height(item->entry->thumbnail); - return (GdkRectangle) { - .x = row->x_offset + item->x_offset, - .y = row->y_offset + self->item_height - height, - .width = width, - .height = height, - }; -} - -static const Entry * -entry_at(FastivBrowser *self, int x, int y) -{ - for (guint i = 0; i < self->layouted_rows->len; i++) { - const Row *row = &g_array_index(self->layouted_rows, Row, i); - for (Item *item = row->items; item->entry; item++) { - GdkRectangle extents = item_extents(self, item, row); - if (x >= extents.x && - y >= extents.y && - x <= extents.x + extents.width && - y <= extents.y + extents.height) - return item->entry; - } - } - return NULL; -} - -static void -draw_row(FastivBrowser *self, cairo_t *cr, const Row *row) -{ - GtkStyleContext *style = gtk_widget_get_style_context(GTK_WIDGET(self)); - gtk_style_context_save(style); - gtk_style_context_add_class(style, "item"); - - GdkRGBA glow_color = {}; - GtkStateFlags state = gtk_style_context_get_state (style); - gtk_style_context_get_color(style, state, &glow_color); - - GtkBorder border; - gtk_style_context_get_border(style, state, &border); - for (Item *item = row->items; item->entry; item++) { - cairo_save(cr); - GdkRectangle extents = item_extents(self, item, row); - cairo_translate(cr, extents.x - border.left, extents.y - border.top); - - gtk_style_context_save(style); - if (item->entry->icon) { - gtk_style_context_add_class(style, "symbolic"); - } else { - gdk_cairo_set_source_rgba(cr, &glow_color); - draw_outer_border(self, cr, - border.left + extents.width + border.right, - border.top + extents.height + border.bottom); - } - - gtk_render_background( - style, cr, border.left, border.top, extents.width, extents.height); - - gtk_render_frame(style, cr, 0, 0, - border.left + extents.width + border.right, - border.top + extents.height + border.bottom); - - if (item->entry->icon) { - GdkRGBA color = {}; - gtk_style_context_get_color(style, state, &color); - gdk_cairo_set_source_rgba(cr, &color); - cairo_mask_surface( - cr, item->entry->thumbnail, border.left, border.top); - } else { - cairo_set_source_surface( - cr, item->entry->thumbnail, border.left, border.top); - cairo_paint(cr); - } - - cairo_restore(cr); - gtk_style_context_restore(style); - } - gtk_style_context_restore(style); -} - -// --- Thumbnails -------------------------------------------------------------- - -// NOTE: "It is important to note that when an image with an alpha channel is -// scaled, linear encoded, pre-multiplied component values must be used!" -static cairo_surface_t * -rescale_thumbnail(cairo_surface_t *thumbnail, double row_height) -{ - if (!thumbnail) - return thumbnail; - - int width = cairo_image_surface_get_width(thumbnail); - int height = cairo_image_surface_get_height(thumbnail); - - double scale_x = 1; - double scale_y = 1; - if (width > g_permitted_width_multiplier * height) { - scale_x = g_permitted_width_multiplier * row_height / width; - scale_y = round(scale_x * height) / height; - } else { - scale_y = row_height / height; - scale_x = round(scale_y * width) / width; - } - if (scale_x == 1 && scale_y == 1) - return thumbnail; - - int projected_width = round(scale_x * width); - int projected_height = round(scale_y * height); - cairo_surface_t *scaled = cairo_image_surface_create( - CAIRO_FORMAT_ARGB32, projected_width, projected_height); - - // pixman can take gamma into account when scaling, unlike Cairo. - struct pixman_f_transform xform_floating; - struct pixman_transform xform; - - // PIXMAN_a8r8g8b8_sRGB can be used for gamma-correct results, - // but it's an incredibly slow transformation - pixman_format_code_t format = PIXMAN_a8r8g8b8; - - pixman_image_t *src = pixman_image_create_bits(format, width, height, - (uint32_t *) cairo_image_surface_get_data(thumbnail), - cairo_image_surface_get_stride(thumbnail)); - pixman_image_t *dest = pixman_image_create_bits(format, - cairo_image_surface_get_width(scaled), - cairo_image_surface_get_height(scaled), - (uint32_t *) cairo_image_surface_get_data(scaled), - cairo_image_surface_get_stride(scaled)); - - pixman_f_transform_init_scale(&xform_floating, scale_x, scale_y); - pixman_f_transform_invert(&xform_floating, &xform_floating); - pixman_transform_from_pixman_f_transform(&xform, &xform_floating); - pixman_image_set_transform(src, &xform); - pixman_image_set_filter(src, PIXMAN_FILTER_BILINEAR, NULL, 0); - pixman_image_set_repeat(src, PIXMAN_REPEAT_PAD); - - pixman_image_composite(PIXMAN_OP_SRC, src, NULL, dest, 0, 0, 0, 0, 0, 0, - projected_width, projected_height); - pixman_image_unref(src); - pixman_image_unref(dest); - - cairo_surface_destroy(thumbnail); - cairo_surface_mark_dirty(scaled); - return scaled; -} - -static void -entry_add_thumbnail(gpointer data, gpointer user_data) -{ - Entry *self = data; - g_clear_object(&self->icon); - g_clear_pointer(&self->thumbnail, cairo_surface_destroy); - - FastivBrowser *browser = FASTIV_BROWSER(user_data); - GFile *file = g_file_new_for_uri(self->uri); - self->thumbnail = rescale_thumbnail( - fastiv_io_lookup_thumbnail(file, browser->item_size), - browser->item_height); - if (self->thumbnail) - goto out; - - // Fall back to symbolic icons, though there's only so much we can do - // in parallel--GTK+ isn't thread-safe. - GFileInfo *info = g_file_query_info(file, - G_FILE_ATTRIBUTE_STANDARD_NAME - "," G_FILE_ATTRIBUTE_STANDARD_SYMBOLIC_ICON, - G_FILE_QUERY_INFO_NONE, NULL, NULL); - if (info) { - GIcon *icon = g_file_info_get_symbolic_icon(info); - if (icon) - self->icon = g_object_ref(icon); - g_object_unref(info); - } -out: - g_object_unref(file); -} - -static void -materialize_icon(FastivBrowser *self, Entry *entry) -{ - if (!entry->icon) - return; - - // Fucker will still give us non-symbolic icons, no more playing nice. - // TODO(p): Investigate a bit closer. We may want to abandon the idea - // of using GLib to look up icons for us, derive a list from a guessed - // MIME type, with "-symbolic" prefixes and fallbacks, - // and use gtk_icon_theme_choose_icon() instead. - // TODO(p): Make sure we have /some/ icon for every entry. - // TODO(p): We might want to populate these on an as-needed basis. - GtkIconInfo *icon_info = gtk_icon_theme_lookup_by_gicon( - gtk_icon_theme_get_default(), entry->icon, self->item_height / 2, - GTK_ICON_LOOKUP_FORCE_SYMBOLIC); - if (!icon_info) - return; - - // Bílá, bílá, bílá, bílá... komu by se nelíbí-lá... - // We do not want any highlights, nor do we want to remember the style. - const GdkRGBA white = {1, 1, 1, 1}; - GdkPixbuf *pixbuf = gtk_icon_info_load_symbolic( - icon_info, &white, &white, &white, &white, NULL, NULL); - if (pixbuf) { - int outer_size = self->item_height; - entry->thumbnail = - cairo_image_surface_create(CAIRO_FORMAT_A8, outer_size, outer_size); - - // "Note that the resulting pixbuf may not be exactly this size;" - // though GTK_ICON_LOOKUP_FORCE_SIZE is also an option. - int x = (outer_size - gdk_pixbuf_get_width(pixbuf)) / 2; - int y = (outer_size - gdk_pixbuf_get_height(pixbuf)) / 2; - - cairo_t *cr = cairo_create(entry->thumbnail); - gdk_cairo_set_source_pixbuf(cr, pixbuf, x, y); - cairo_paint(cr); - cairo_destroy(cr); - - g_object_unref(pixbuf); - } - g_object_unref(icon_info); -} - -static void -reload_thumbnails(FastivBrowser *self) -{ - GThreadPool *pool = g_thread_pool_new( - entry_add_thumbnail, self, g_get_num_processors(), FALSE, NULL); - for (guint i = 0; i < self->entries->len; i++) - g_thread_pool_push(pool, &g_array_index(self->entries, Entry, i), NULL); - g_thread_pool_free(pool, FALSE, TRUE); - - for (guint i = 0; i < self->entries->len; i++) - materialize_icon(self, &g_array_index(self->entries, Entry, i)); - - gtk_widget_queue_resize(GTK_WIDGET(self)); -} - -// --- Context menu------------------------------------------------------------- - -typedef struct _OpenContext { - GWeakRef widget; - GFile *file; - char *content_type; - GAppInfo *app_info; -} OpenContext; - -static void -open_context_notify(gpointer data, G_GNUC_UNUSED GClosure *closure) -{ - OpenContext *self = data; - g_weak_ref_clear(&self->widget); - g_clear_object(&self->app_info); - g_clear_object(&self->file); - g_free(self->content_type); - g_free(self); -} - -static void -open_context_launch(GtkWidget *widget, OpenContext *self) -{ - GdkAppLaunchContext *context = - gdk_display_get_app_launch_context(gtk_widget_get_display(widget)); - gdk_app_launch_context_set_screen(context, gtk_widget_get_screen(widget)); - gdk_app_launch_context_set_timestamp(context, gtk_get_current_event_time()); - - // TODO(p): Display errors. - GList *files = g_list_append(NULL, self->file); - if (g_app_info_launch( - self->app_info, files, G_APP_LAUNCH_CONTEXT(context), NULL)) { - g_app_info_set_as_last_used_for_type( - self->app_info, self->content_type, NULL); - } - g_list_free(files); - g_object_unref(context); -} - -static void -append_opener(GtkWidget *menu, GAppInfo *opener, const OpenContext *template) -{ - OpenContext *ctx = g_malloc0(sizeof *ctx); - g_weak_ref_init(&ctx->widget, NULL); - ctx->file = g_object_ref(template->file); - ctx->content_type = g_strdup(template->content_type); - ctx->app_info = opener; - - // It's documented that we can touch the child, if we want formatting: - // https://docs.gtk.org/gtk3/class.MenuItem.html - // XXX: Would g_app_info_get_display_name() be any better? - gchar *name = g_strdup_printf("Open With %s", g_app_info_get_name(opener)); - GtkWidget *item = gtk_menu_item_new_with_label(name); - g_free(name); - g_signal_connect_data(item, "activate", G_CALLBACK(open_context_launch), - ctx, open_context_notify, 0); - gtk_menu_shell_append(GTK_MENU_SHELL(menu), item); -} - -static void -on_chooser_activate(GtkMenuItem *item, gpointer user_data) -{ - OpenContext *ctx = user_data; - GtkWindow *window = NULL; - GtkWidget *widget = g_weak_ref_get(&ctx->widget); - if (widget) { - if (GTK_IS_WINDOW((widget = gtk_widget_get_toplevel(widget)))) - window = GTK_WINDOW(widget); - } - - GtkWidget *dialog = gtk_app_chooser_dialog_new_for_content_type(window, - GTK_DIALOG_DESTROY_WITH_PARENT | GTK_DIALOG_MODAL, ctx->content_type); - if (gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_OK) { - ctx->app_info = gtk_app_chooser_get_app_info(GTK_APP_CHOOSER(dialog)); - open_context_launch(GTK_WIDGET(item), ctx); - } - gtk_widget_destroy(dialog); -} - -static gboolean -destroy_widget_idle_source_func(GtkWidget *widget) -{ - // The whole menu is deactivated /before/ any item is activated, - // and a destroyed child item will not activate. - gtk_widget_destroy(widget); - return FALSE; -} - -static void -show_context_menu(GtkWidget *widget, const char *uri) -{ - GFile *file = g_file_new_for_uri(uri); - GFileInfo *info = g_file_query_info(file, - G_FILE_ATTRIBUTE_STANDARD_NAME - "," G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE, - G_FILE_QUERY_INFO_NONE, NULL, NULL); - if (!info) { - g_object_unref(file); - return; - } - - // This will have no application pre-assigned, for use with GTK+'s dialog. - OpenContext *ctx = g_malloc0(sizeof *ctx); - g_weak_ref_init(&ctx->widget, widget); - ctx->file = file; - ctx->content_type = g_strdup(g_file_info_get_content_type(info)); - g_object_unref(info); - - GAppInfo *default_ = - g_app_info_get_default_for_type(ctx->content_type, FALSE); - GList *recommended = g_app_info_get_recommended_for_type(ctx->content_type); - GList *fallback = g_app_info_get_fallback_for_type(ctx->content_type); - - GtkWidget *menu = gtk_menu_new(); - if (default_) { - append_opener(menu, default_, ctx); - gtk_menu_shell_append( - GTK_MENU_SHELL(menu), gtk_separator_menu_item_new()); - } - - for (GList *iter = recommended; iter; iter = iter->next) { - if (g_app_info_should_show(iter->data) && - (!default_ || !g_app_info_equal(iter->data, default_))) - append_opener(menu, iter->data, ctx); - else - g_object_unref(iter->data); - } - if (recommended) { - g_list_free(recommended); - gtk_menu_shell_append( - GTK_MENU_SHELL(menu), gtk_separator_menu_item_new()); - } - - for (GList *iter = fallback; iter; iter = iter->next) { - if (g_app_info_should_show(iter->data) && - (!default_ || !g_app_info_equal(iter->data, default_))) - append_opener(menu, iter->data, ctx); - else - g_object_unref(iter->data); - } - if (fallback) { - g_list_free(fallback); - gtk_menu_shell_append( - GTK_MENU_SHELL(menu), gtk_separator_menu_item_new()); - } - - GtkWidget *item = gtk_menu_item_new_with_label("Open With..."); - g_signal_connect_data(item, "activate", G_CALLBACK(on_chooser_activate), - ctx, open_context_notify, 0); - gtk_menu_shell_append(GTK_MENU_SHELL(menu), item); - - // As per GTK+ 3 Common Questions, 1.5. - g_object_ref_sink(menu); - g_signal_connect_swapped(menu, "deactivate", - G_CALLBACK(g_idle_add), destroy_widget_idle_source_func); - g_signal_connect(menu, "destroy", G_CALLBACK(g_object_unref), NULL); - - gtk_widget_show_all(menu); - gtk_menu_popup_at_pointer(GTK_MENU(menu), NULL); -} - -// --- Boilerplate ------------------------------------------------------------- - -// TODO(p): For proper navigation, we need to implement GtkScrollable. -G_DEFINE_TYPE_EXTENDED(FastivBrowser, fastiv_browser, GTK_TYPE_WIDGET, 0, - /* G_IMPLEMENT_INTERFACE(GTK_TYPE_SCROLLABLE, - fastiv_browser_scrollable_init) */) - -enum { - PROP_THUMBNAIL_SIZE = 1, - N_PROPERTIES -}; - -static GParamSpec *browser_properties[N_PROPERTIES]; - -enum { - ITEM_ACTIVATED, - LAST_SIGNAL, -}; - -// Globals are, sadly, the canonical way of storing signal numbers. -static guint browser_signals[LAST_SIGNAL]; - -static void -fastiv_browser_finalize(GObject *gobject) -{ - FastivBrowser *self = FASTIV_BROWSER(gobject); - g_array_free(self->entries, TRUE); - g_array_free(self->layouted_rows, TRUE); - cairo_surface_destroy(self->glow); - g_clear_object(&self->pointer); - - G_OBJECT_CLASS(fastiv_browser_parent_class)->finalize(gobject); -} - -static void -fastiv_browser_get_property( - GObject *object, guint property_id, GValue *value, GParamSpec *pspec) -{ - FastivBrowser *self = FASTIV_BROWSER(object); - switch (property_id) { - case PROP_THUMBNAIL_SIZE: - g_value_set_enum(value, self->item_size); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec); - } -} - -static void -set_item_size(FastivBrowser *self, FastivIoThumbnailSize size) -{ - if (size < FASTIV_IO_THUMBNAIL_SIZE_MIN || - size > FASTIV_IO_THUMBNAIL_SIZE_MAX) - return; - - if (size != self->item_size) { - self->item_size = size; - self->item_height = fastiv_io_thumbnail_sizes[self->item_size].size; - reload_thumbnails(self); - - g_object_notify_by_pspec( - G_OBJECT(self), browser_properties[PROP_THUMBNAIL_SIZE]); - } -} - -static void -fastiv_browser_set_property( - GObject *object, guint property_id, const GValue *value, GParamSpec *pspec) -{ - FastivBrowser *self = FASTIV_BROWSER(object); - switch (property_id) { - case PROP_THUMBNAIL_SIZE: - set_item_size(self, g_value_get_enum(value)); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec); - } -} - -static GtkSizeRequestMode -fastiv_browser_get_request_mode(G_GNUC_UNUSED GtkWidget *widget) -{ - return GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH; -} - -static void -fastiv_browser_get_preferred_width( - GtkWidget *widget, gint *minimum, gint *natural) -{ - FastivBrowser *self = FASTIV_BROWSER(widget); - GtkStyleContext *style = gtk_widget_get_style_context(widget); - - GtkBorder padding = {}; - gtk_style_context_get_padding(style, GTK_STATE_FLAG_NORMAL, &padding); - *minimum = *natural = - g_permitted_width_multiplier * self->item_height + - padding.left + 2 * self->item_border_x + padding.right; -} - -static void -fastiv_browser_get_preferred_height_for_width( - GtkWidget *widget, gint width, gint *minimum, gint *natural) -{ - // XXX: This is rather ugly, the caller is only asking. - *minimum = *natural = relayout(FASTIV_BROWSER(widget), width); -} - -static void -fastiv_browser_realize(GtkWidget *widget) -{ - GtkAllocation allocation; - gtk_widget_get_allocation(widget, &allocation); - - GdkWindowAttr attributes = { - .window_type = GDK_WINDOW_CHILD, - .x = allocation.x, - .y = allocation.y, - .width = allocation.width, - .height = allocation.height, - - // Input-only would presumably also work (as in GtkPathBar, e.g.), - // but it merely seems to involve more work. - .wclass = GDK_INPUT_OUTPUT, - - .visual = gtk_widget_get_visual(widget), - .event_mask = gtk_widget_get_events(widget) | GDK_KEY_PRESS_MASK | - GDK_POINTER_MOTION_MASK | GDK_BUTTON_PRESS_MASK | - GDK_SCROLL_MASK, - }; - - // We need this window to receive input events at all. - // TODO(p): See if input events bubble up to parents. - GdkWindow *window = gdk_window_new(gtk_widget_get_parent_window(widget), - &attributes, GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL); - gtk_widget_register_window(widget, window); - gtk_widget_set_window(widget, window); - gtk_widget_set_realized(widget, TRUE); - - FastivBrowser *self = FASTIV_BROWSER(widget); - g_clear_object(&self->pointer); - self->pointer = - gdk_cursor_new_from_name(gdk_window_get_display(window), "pointer"); -} - -static void -fastiv_browser_size_allocate(GtkWidget *widget, GtkAllocation *allocation) -{ - GTK_WIDGET_CLASS(fastiv_browser_parent_class) - ->size_allocate(widget, allocation); - - relayout(FASTIV_BROWSER(widget), allocation->width); -} - -static gboolean -fastiv_browser_draw(GtkWidget *widget, cairo_t *cr) -{ - FastivBrowser *self = FASTIV_BROWSER(widget); - if (!gtk_cairo_should_draw_window(cr, gtk_widget_get_window(widget))) - return TRUE; - - GtkAllocation allocation; - gtk_widget_get_allocation(widget, &allocation); - gtk_render_background(gtk_widget_get_style_context(widget), cr, 0, 0, - allocation.width, allocation.height); - - GdkRectangle clip = {}; - gboolean have_clip = gdk_cairo_get_clip_rectangle(cr, &clip); - - for (guint i = 0; i < self->layouted_rows->len; i++) { - const Row *row = &g_array_index(self->layouted_rows, Row, i); - GdkRectangle extents = { - .x = 0, - .y = row->y_offset - self->item_border_y, - .width = allocation.width, - .height = self->item_height + 2 * self->item_border_y, - }; - if (!have_clip || gdk_rectangle_intersect(&clip, &extents, NULL)) - draw_row(self, cr, row); - } - return TRUE; -} - -static gboolean -open_entry(GtkWidget *self, const Entry *entry, gboolean new_window) -{ - GFile *location = g_file_new_for_uri(entry->uri); - g_signal_emit(self, browser_signals[ITEM_ACTIVATED], 0, location, - new_window ? GTK_PLACES_OPEN_NEW_WINDOW : GTK_PLACES_OPEN_NORMAL); - g_object_unref(location); - return TRUE; -} - -static gboolean -fastiv_browser_button_press_event(GtkWidget *widget, GdkEventButton *event) -{ - GTK_WIDGET_CLASS(fastiv_browser_parent_class) - ->button_press_event(widget, event); - - FastivBrowser *self = FASTIV_BROWSER(widget); - if (event->type != GDK_BUTTON_PRESS) - return FALSE; - - guint state = event->state & gtk_accelerator_get_default_mod_mask(); - if (event->button == GDK_BUTTON_PRIMARY && state == 0 && - gtk_widget_get_focus_on_click(widget)) - gtk_widget_grab_focus(widget); - - const Entry *entry = entry_at(self, event->x, event->y); - if (!entry) - return FALSE; - - switch (event->button) { - case GDK_BUTTON_PRIMARY: - if (state == 0) - return open_entry(widget, entry, FALSE); - if (state == GDK_CONTROL_MASK) - return open_entry(widget, entry, TRUE); - return FALSE; - case GDK_BUTTON_MIDDLE: - if (state == 0) - return open_entry(widget, entry, TRUE); - return FALSE; - case GDK_BUTTON_SECONDARY: - // On X11, after closing the menu, the pointer otherwise remains, - // no matter what its new location is. - gdk_window_set_cursor(gtk_widget_get_window(widget), NULL); - show_context_menu(widget, entry->uri); - return TRUE; - default: - return FALSE; - } -} - -gboolean -fastiv_browser_motion_notify_event(GtkWidget *widget, GdkEventMotion *event) -{ - GTK_WIDGET_CLASS(fastiv_browser_parent_class) - ->motion_notify_event(widget, event); - - FastivBrowser *self = FASTIV_BROWSER(widget); - if (event->state != 0) - return FALSE; - - const Entry *entry = entry_at(self, event->x, event->y); - GdkWindow *window = gtk_widget_get_window(widget); - gdk_window_set_cursor(window, entry ? self->pointer : NULL); - return TRUE; -} - -static gboolean -fastiv_browser_scroll_event(GtkWidget *widget, GdkEventScroll *event) -{ - FastivBrowser *self = FASTIV_BROWSER(widget); - if ((event->state & gtk_accelerator_get_default_mod_mask()) != - GDK_CONTROL_MASK) - return FALSE; - - switch (event->direction) { - case GDK_SCROLL_UP: - set_item_size(self, self->item_size + 1); - return TRUE; - case GDK_SCROLL_DOWN: - set_item_size(self, self->item_size - 1); - return TRUE; - default: - // For some reason, we can also get GDK_SCROLL_SMOOTH. - // Left/right are good to steal from GtkScrolledWindow for consistency. - return TRUE; - } -} - -static gboolean -fastiv_browser_query_tooltip(GtkWidget *widget, gint x, gint y, - G_GNUC_UNUSED gboolean keyboard_tooltip, GtkTooltip *tooltip) -{ - FastivBrowser *self = FASTIV_BROWSER(widget); - const Entry *entry = entry_at(self, x, y); - if (!entry) - return FALSE; - - GFile *file = g_file_new_for_uri(entry->uri); - GFileInfo *info = g_file_query_info(file, - G_FILE_ATTRIBUTE_STANDARD_NAME - "," G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME, - G_FILE_QUERY_INFO_NONE, NULL, NULL); - g_object_unref(file); - if (!info) - return FALSE; - - gtk_tooltip_set_text(tooltip, g_file_info_get_display_name(info)); - g_object_unref(info); - return TRUE; -} - -static void -fastiv_browser_style_updated(GtkWidget *widget) -{ - GTK_WIDGET_CLASS(fastiv_browser_parent_class)->style_updated(widget); - - FastivBrowser *self = FASTIV_BROWSER(widget); - GtkStyleContext *style = gtk_widget_get_style_context(widget); - GtkBorder border = {}, margin = {}; - - int item_spacing = self->item_spacing; - gtk_widget_style_get(widget, "spacing", &self->item_spacing, NULL); - if (item_spacing != self->item_spacing) - gtk_widget_queue_resize(widget); - - // Using a pseudo-class, because GTK+ regions are deprecated. - gtk_style_context_save(style); - gtk_style_context_add_class(style, "item"); - gtk_style_context_get_margin(style, GTK_STATE_FLAG_NORMAL, &margin); - gtk_style_context_get_border(style, GTK_STATE_FLAG_NORMAL, &border); - gtk_style_context_restore(style); - - const int glow_w = (margin.left + margin.right) / 2; - const int glow_h = (margin.top + margin.bottom) / 2; - - // Don't set different opposing sides, it will misrender, your problem. - // When the style of the class changes, this virtual method isn't invoked, - // so the update check is mildly pointless. - int item_border_x = glow_w + (border.left + border.right) / 2; - int item_border_y = glow_h + (border.top + border.bottom) / 2; - if (item_border_x != self->item_border_x || - item_border_y != self->item_border_y) { - self->item_border_x = item_border_x; - self->item_border_y = item_border_y; - gtk_widget_queue_resize(widget); - } - - if (self->glow) - cairo_surface_destroy(self->glow); - if (glow_w <= 0 || glow_h <= 0) { - self->glow = cairo_image_surface_create(CAIRO_FORMAT_A1, 0, 0); - return; - } - - self->glow = - cairo_image_surface_create(CAIRO_FORMAT_A8, glow_w, glow_h); - unsigned char *data = cairo_image_surface_get_data(self->glow); - int stride = cairo_image_surface_get_stride(self->glow); - - // Smooth out the curve, so that the edge of the glow isn't too jarring. - const double fade_factor = 1.5; - - const int x_max = glow_w - 1; - const int y_max = glow_h - 1; - const double x_scale = 1. / MAX(1, x_max); - const double y_scale = 1. / MAX(1, y_max); - for (int y = 0; y <= y_max; y++) - for (int x = 0; x <= x_max; x++) { - const double xn = x_scale * (x_max - x); - const double yn = y_scale * (y_max - y); - double v = MIN(sqrt(xn * xn + yn * yn), 1); - data[y * stride + x] = round(pow(1 - v, fade_factor) * 255); - } - cairo_surface_mark_dirty(self->glow); -} - -static void -fastiv_browser_class_init(FastivBrowserClass *klass) -{ - GObjectClass *object_class = G_OBJECT_CLASS(klass); - object_class->finalize = fastiv_browser_finalize; - object_class->get_property = fastiv_browser_get_property; - object_class->set_property = fastiv_browser_set_property; - - browser_properties[PROP_THUMBNAIL_SIZE] = g_param_spec_enum( - "thumbnail-size", "Thumbnail size", "The thumbnail height to use", - FASTIV_TYPE_IO_THUMBNAIL_SIZE, FASTIV_IO_THUMBNAIL_SIZE_NORMAL, - G_PARAM_READWRITE); - g_object_class_install_properties( - object_class, N_PROPERTIES, browser_properties); - - browser_signals[ITEM_ACTIVATED] = g_signal_new("item-activated", - G_TYPE_FROM_CLASS(klass), 0, 0, NULL, NULL, NULL, - G_TYPE_NONE, 2, G_TYPE_FILE, GTK_TYPE_PLACES_OPEN_FLAGS); - - GtkWidgetClass *widget_class = GTK_WIDGET_CLASS(klass); - widget_class->get_request_mode = fastiv_browser_get_request_mode; - widget_class->get_preferred_width = fastiv_browser_get_preferred_width; - widget_class->get_preferred_height_for_width = - fastiv_browser_get_preferred_height_for_width; - widget_class->realize = fastiv_browser_realize; - widget_class->draw = fastiv_browser_draw; - widget_class->size_allocate = fastiv_browser_size_allocate; - widget_class->button_press_event = fastiv_browser_button_press_event; - widget_class->motion_notify_event = fastiv_browser_motion_notify_event; - widget_class->scroll_event = fastiv_browser_scroll_event; - widget_class->query_tooltip = fastiv_browser_query_tooltip; - widget_class->style_updated = fastiv_browser_style_updated; - - // Could be split to also-idiomatic row-spacing/column-spacing properties. - // The GParamSpec is sinked by this call. - gtk_widget_class_install_style_property(widget_class, - g_param_spec_int("spacing", "Spacing", "Space between items", - 0, G_MAXINT, 1, G_PARAM_READWRITE)); - - // TODO(p): Later override "screen_changed", recreate Pango layouts there, - // if we get to have any, or otherwise reflect DPI changes. - gtk_widget_class_set_css_name(widget_class, "fastiv-browser"); -} - -static void -fastiv_browser_init(FastivBrowser *self) -{ - gtk_widget_set_can_focus(GTK_WIDGET(self), TRUE); - gtk_widget_set_has_tooltip(GTK_WIDGET(self), TRUE); - - self->entries = g_array_new(FALSE, TRUE, sizeof(Entry)); - g_array_set_clear_func(self->entries, (GDestroyNotify) entry_free); - self->layouted_rows = g_array_new(FALSE, TRUE, sizeof(Row)); - g_array_set_clear_func(self->layouted_rows, (GDestroyNotify) row_free); - - set_item_size(self, FASTIV_IO_THUMBNAIL_SIZE_NORMAL); - self->selected = -1; - self->glow = cairo_image_surface_create(CAIRO_FORMAT_A1, 0, 0); - - g_signal_connect_swapped(gtk_settings_get_default(), - "notify::gtk-icon-theme-name", G_CALLBACK(reload_thumbnails), self); -} - -// --- Public interface -------------------------------------------------------- - -static gint -entry_compare(gconstpointer a, gconstpointer b) -{ - const Entry *entry1 = a; - const Entry *entry2 = b; - GFile *location1 = g_file_new_for_uri(entry1->uri); - GFile *location2 = g_file_new_for_uri(entry2->uri); - gint result = fastiv_io_filecmp(location1, location2); - g_object_unref(location1); - g_object_unref(location2); - return result; -} - -void -fastiv_browser_load( - FastivBrowser *self, FastivBrowserFilterCallback cb, const char *path) -{ - g_array_set_size(self->entries, 0); - g_array_set_size(self->layouted_rows, 0); - - GFile *file = g_file_new_for_path(path); - GFileEnumerator *enumerator = g_file_enumerate_children(file, - G_FILE_ATTRIBUTE_STANDARD_NAME "," G_FILE_ATTRIBUTE_STANDARD_TYPE, - G_FILE_QUERY_INFO_NONE, NULL, NULL); - g_object_unref(file); - if (!enumerator) - return; - - while (TRUE) { - GFileInfo *info = NULL; - GFile *child = NULL; - if (!g_file_enumerator_iterate(enumerator, &info, &child, NULL, NULL) || - !info) - break; - if (g_file_info_get_file_type(info) == G_FILE_TYPE_DIRECTORY) - continue; - if (cb && !cb(g_file_info_get_name(info))) - continue; - - g_array_append_val(self->entries, - ((Entry) {.thumbnail = NULL, .uri = g_file_get_uri(child)})); - } - g_object_unref(enumerator); - - // TODO(p): Support being passed a sort function. - g_array_sort(self->entries, entry_compare); - - reload_thumbnails(self); -} |