forked from mirrors/gecko-dev
Bug 1876366 [Linux] Allow to use legacy cursor if widget.gtk.legacy-cursors.enabled is set r=emilio
Differential Revision: https://phabricator.services.mozilla.com/D204351
This commit is contained in:
stransky
parent
35da26a907
commit
d07fe21409
2 changed files with 250 additions and 42 deletions
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@ -16061,6 +16061,12 @@
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value: 2
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mirror: always
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# Whether to use gtk legacy cursor API.
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- name: widget.gtk.legacy-cursors.enabled
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type: bool
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value: false
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mirror: always
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# Whether to use gtk high contrast themes to disable content styling like on
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# windows high contrast mode.
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- name: widget.content.gtk-high-contrast.enabled
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@ -7842,13 +7842,240 @@ static GtkWidget* get_gtk_widget_for_gdk_window(GdkWindow* window) {
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return GTK_WIDGET(user_data);
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}
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static GdkCursor* get_gtk_cursor(nsCursor aCursor) {
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static GdkCursor* get_gtk_cursor_from_type(uint8_t aCursorType) {
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GdkDisplay* defaultDisplay = gdk_display_get_default();
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GdkCursor* gdkcursor = nullptr;
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// If by now we don't have a xcursor, this means we have to make a custom
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// one. First, we try creating a named cursor based on the hash of our
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// custom bitmap, as libXcursor has some magic to convert bitmapped cursors
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// to themed cursors
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if (GtkCursors[aCursorType].hash) {
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gdkcursor =
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gdk_cursor_new_from_name(defaultDisplay, GtkCursors[aCursorType].hash);
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if (gdkcursor) {
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return gdkcursor;
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}
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}
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LOGW("get_gtk_cursor_from_type(): Failed to get cursor type %d, try bitmap",
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aCursorType);
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// If we still don't have a xcursor, we now really create a bitmap cursor
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GdkPixbuf* cursor_pixbuf =
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gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 32, 32);
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if (!cursor_pixbuf) {
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return nullptr;
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}
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guchar* data = gdk_pixbuf_get_pixels(cursor_pixbuf);
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// Read data from GtkCursors and compose RGBA surface from 1bit bitmap and
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// mask GtkCursors bits and mask are 32x32 monochrome bitmaps (1 bit for
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// each pixel) so it's 128 byte array (4 bytes for are one bitmap row and
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// there are 32 rows here).
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const unsigned char* bits = GtkCursors[aCursorType].bits;
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const unsigned char* mask_bits = GtkCursors[aCursorType].mask_bits;
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for (int i = 0; i < 128; i++) {
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char bit = (char)*bits++;
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char mask = (char)*mask_bits++;
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for (int j = 0; j < 8; j++) {
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unsigned char pix = ~(((bit >> j) & 0x01) * 0xff);
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*data++ = pix;
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*data++ = pix;
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*data++ = pix;
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*data++ = (((mask >> j) & 0x01) * 0xff);
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}
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}
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gdkcursor = gdk_cursor_new_from_pixbuf(
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gdk_display_get_default(), cursor_pixbuf, GtkCursors[aCursorType].hot_x,
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GtkCursors[aCursorType].hot_y);
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g_object_unref(cursor_pixbuf);
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return gdkcursor;
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}
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static GdkCursor* get_gtk_cursor_legacy(nsCursor aCursor) {
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GdkCursor* gdkcursor = nullptr;
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uint8_t newType = 0xff;
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if ((gdkcursor = gCursorCache[aCursor])) {
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return gdkcursor;
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GdkDisplay* defaultDisplay = gdk_display_get_default();
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// The strategy here is to use standard GDK cursors, and, if not available,
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// load by standard name with gdk_cursor_new_from_name.
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// Spec is here: http://www.freedesktop.org/wiki/Specifications/cursor-spec/
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switch (aCursor) {
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case eCursor_standard:
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gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_LEFT_PTR);
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break;
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case eCursor_wait:
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gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_WATCH);
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break;
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case eCursor_select:
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gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_XTERM);
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break;
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case eCursor_hyperlink:
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gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_HAND2);
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break;
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case eCursor_n_resize:
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gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_TOP_SIDE);
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break;
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case eCursor_s_resize:
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gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_BOTTOM_SIDE);
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break;
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case eCursor_w_resize:
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gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_LEFT_SIDE);
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break;
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case eCursor_e_resize:
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gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_RIGHT_SIDE);
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break;
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case eCursor_nw_resize:
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gdkcursor =
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gdk_cursor_new_for_display(defaultDisplay, GDK_TOP_LEFT_CORNER);
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break;
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case eCursor_se_resize:
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gdkcursor =
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gdk_cursor_new_for_display(defaultDisplay, GDK_BOTTOM_RIGHT_CORNER);
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break;
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case eCursor_ne_resize:
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gdkcursor =
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gdk_cursor_new_for_display(defaultDisplay, GDK_TOP_RIGHT_CORNER);
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break;
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case eCursor_sw_resize:
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gdkcursor =
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gdk_cursor_new_for_display(defaultDisplay, GDK_BOTTOM_LEFT_CORNER);
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break;
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case eCursor_crosshair:
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gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_CROSSHAIR);
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break;
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case eCursor_move:
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gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_FLEUR);
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break;
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case eCursor_help:
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gdkcursor =
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gdk_cursor_new_for_display(defaultDisplay, GDK_QUESTION_ARROW);
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break;
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case eCursor_copy: // CSS3
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gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "copy");
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if (!gdkcursor) newType = MOZ_CURSOR_COPY;
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break;
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case eCursor_alias:
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gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "alias");
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if (!gdkcursor) newType = MOZ_CURSOR_ALIAS;
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break;
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case eCursor_context_menu:
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gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "context-menu");
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if (!gdkcursor) newType = MOZ_CURSOR_CONTEXT_MENU;
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break;
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case eCursor_cell:
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gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_PLUS);
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break;
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// Those two aren’t standardized. Trying both KDE’s and GNOME’s names
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case eCursor_grab:
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gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "openhand");
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if (!gdkcursor) newType = MOZ_CURSOR_HAND_GRAB;
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break;
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case eCursor_grabbing:
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gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "closedhand");
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if (!gdkcursor) {
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gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "grabbing");
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}
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if (!gdkcursor) newType = MOZ_CURSOR_HAND_GRABBING;
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break;
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case eCursor_spinning:
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gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "progress");
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if (!gdkcursor) newType = MOZ_CURSOR_SPINNING;
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break;
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case eCursor_zoom_in:
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gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "zoom-in");
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if (!gdkcursor) newType = MOZ_CURSOR_ZOOM_IN;
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break;
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case eCursor_zoom_out:
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gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "zoom-out");
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if (!gdkcursor) newType = MOZ_CURSOR_ZOOM_OUT;
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break;
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case eCursor_not_allowed:
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gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "not-allowed");
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if (!gdkcursor) { // nonstandard, yet common
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gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "crossed_circle");
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}
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if (!gdkcursor) newType = MOZ_CURSOR_NOT_ALLOWED;
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break;
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case eCursor_no_drop:
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gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "no-drop");
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if (!gdkcursor) { // this nonstandard sequence makes it work on KDE and
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// GNOME
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gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "forbidden");
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}
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if (!gdkcursor) {
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gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "circle");
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}
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if (!gdkcursor) newType = MOZ_CURSOR_NOT_ALLOWED;
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break;
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case eCursor_vertical_text:
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gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "vertical-text");
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if (!gdkcursor) {
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newType = MOZ_CURSOR_VERTICAL_TEXT;
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}
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break;
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case eCursor_all_scroll:
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gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_FLEUR);
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break;
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case eCursor_nesw_resize:
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gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "size_bdiag");
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if (!gdkcursor) newType = MOZ_CURSOR_NESW_RESIZE;
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break;
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case eCursor_nwse_resize:
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gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "size_fdiag");
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if (!gdkcursor) newType = MOZ_CURSOR_NWSE_RESIZE;
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break;
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case eCursor_ns_resize:
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gdkcursor =
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gdk_cursor_new_for_display(defaultDisplay, GDK_SB_V_DOUBLE_ARROW);
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break;
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case eCursor_ew_resize:
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gdkcursor =
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gdk_cursor_new_for_display(defaultDisplay, GDK_SB_H_DOUBLE_ARROW);
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break;
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// Here, two better fitting cursors exist in some cursor themes. Try those
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// first
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case eCursor_row_resize:
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gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "split_v");
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if (!gdkcursor) {
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gdkcursor =
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gdk_cursor_new_for_display(defaultDisplay, GDK_SB_V_DOUBLE_ARROW);
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}
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break;
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case eCursor_col_resize:
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gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "split_h");
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if (!gdkcursor) {
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gdkcursor =
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gdk_cursor_new_for_display(defaultDisplay, GDK_SB_H_DOUBLE_ARROW);
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}
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break;
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case eCursor_none:
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newType = MOZ_CURSOR_NONE;
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break;
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default:
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NS_ASSERTION(aCursor, "Invalid cursor type");
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gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_LEFT_PTR);
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break;
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}
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if (!gdkcursor) {
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LOGW("get_gtk_cursor_legacy(): Failed to get cursor %d, try fallback",
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aCursor);
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gdkcursor = get_gtk_cursor_from_type(newType);
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}
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return gdkcursor;
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}
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static GdkCursor* get_gtk_cursor_from_name(nsCursor aCursor) {
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GdkCursor* gdkcursor = nullptr;
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uint8_t newType = 0xff;
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GdkDisplay* defaultDisplay = gdk_display_get_default();
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@ -7987,50 +8214,25 @@ static GdkCursor* get_gtk_cursor(nsCursor aCursor) {
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break;
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}
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// If by now we don't have a xcursor, this means we have to make a custom
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// one. First, we try creating a named cursor based on the hash of our
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// custom bitmap, as libXcursor has some magic to convert bitmapped cursors
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// to themed cursors
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if (newType != 0xFF && GtkCursors[newType].hash) {
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gdkcursor =
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gdk_cursor_new_from_name(defaultDisplay, GtkCursors[newType].hash);
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if (!gdkcursor) {
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LOGW("get_gtk_cursor_from_name(): Failed to get cursor %d, try fallback",
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aCursor);
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gdkcursor = get_gtk_cursor_from_type(newType);
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}
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// If we still don't have a xcursor, we now really create a bitmap cursor
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if (newType != 0xff && !gdkcursor) {
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GdkPixbuf* cursor_pixbuf =
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gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 32, 32);
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if (!cursor_pixbuf) {
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return nullptr;
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return gdkcursor;
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}
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static GdkCursor* get_gtk_cursor(nsCursor aCursor) {
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GdkCursor* gdkcursor = nullptr;
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if ((gdkcursor = gCursorCache[aCursor])) {
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return gdkcursor;
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}
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guchar* data = gdk_pixbuf_get_pixels(cursor_pixbuf);
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// Read data from GtkCursors and compose RGBA surface from 1bit bitmap and
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// mask GtkCursors bits and mask are 32x32 monochrome bitmaps (1 bit for
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// each pixel) so it's 128 byte array (4 bytes for are one bitmap row and
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// there are 32 rows here).
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const unsigned char* bits = GtkCursors[newType].bits;
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const unsigned char* mask_bits = GtkCursors[newType].mask_bits;
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for (int i = 0; i < 128; i++) {
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char bit = (char)*bits++;
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char mask = (char)*mask_bits++;
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for (int j = 0; j < 8; j++) {
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unsigned char pix = ~(((bit >> j) & 0x01) * 0xff);
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*data++ = pix;
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*data++ = pix;
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*data++ = pix;
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*data++ = (((mask >> j) & 0x01) * 0xff);
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}
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}
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gdkcursor = gdk_cursor_new_from_pixbuf(
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gdk_display_get_default(), cursor_pixbuf, GtkCursors[newType].hot_x,
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GtkCursors[newType].hot_y);
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g_object_unref(cursor_pixbuf);
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}
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gdkcursor = StaticPrefs::widget_gtk_legacy_cursors_enabled()
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? get_gtk_cursor_legacy(aCursor)
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: get_gtk_cursor_from_name(aCursor);
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gCursorCache[aCursor] = gdkcursor;
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