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-rw-r--r--src/ui/theme.c1397
1 files changed, 0 insertions, 1397 deletions
diff --git a/src/ui/theme.c b/src/ui/theme.c
deleted file mode 100644
index a4c8a0de2..000000000
--- a/src/ui/theme.c
+++ /dev/null
@@ -1,1397 +0,0 @@
-/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
-
-/*
- * Copyright (C) 2001 Havoc Pennington
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "config.h"
-
-#include "ui/theme-private.h"
-
-#include <gtk/gtk.h>
-#include <math.h>
-#include <stdarg.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "core/util-private.h"
-#include "meta/prefs.h"
-#include "ui/frames.h"
-
-static void scale_border (GtkBorder *border, double factor);
-
-static MetaFrameLayout *
-meta_frame_layout_new (void)
-{
- MetaFrameLayout *layout;
-
- layout = g_new0 (MetaFrameLayout, 1);
-
- /* Spacing as hardcoded in GTK+:
- * https://git.gnome.org/browse/gtk+/tree/gtk/gtkheaderbar.c?h=gtk-3-14#n53
- */
- layout->titlebar_spacing = 6;
- layout->has_title = TRUE;
- layout->title_scale = PANGO_SCALE_MEDIUM;
- layout->icon_size = META_MINI_ICON_WIDTH;
-
- return layout;
-}
-
-static void
-meta_frame_layout_free (MetaFrameLayout *layout)
-{
- g_return_if_fail (layout != NULL);
-
- g_free (layout);
-}
-
-static void
-meta_frame_layout_get_borders (const MetaFrameLayout *layout,
- int text_height,
- MetaFrameFlags flags,
- MetaFrameType type,
- MetaFrameBorders *borders)
-{
- int buttons_height, content_height, draggable_borders;
- int scale = meta_theme_get_window_scaling_factor ();
-
- meta_frame_borders_clear (borders);
-
- /* For a full-screen window, we don't have any borders, visible or not. */
- if (flags & META_FRAME_FULLSCREEN)
- return;
-
- g_return_if_fail (layout != NULL);
-
- if (!layout->has_title)
- text_height = 0;
- else
- text_height = layout->title_margin.top + text_height + layout->title_margin.bottom;
-
- buttons_height = MAX ((int)layout->icon_size, layout->button_min_size.height) +
- layout->button_margin.top + layout->button_border.top +
- layout->button_margin.bottom + layout->button_border.bottom;
- content_height = MAX (buttons_height, text_height);
- content_height = MAX (content_height, layout->titlebar_min_size.height) +
- layout->titlebar_border.top + layout->titlebar_border.bottom;
-
- borders->visible.top = layout->frame_border.top + content_height;
- borders->visible.left = layout->frame_border.left;
- borders->visible.right = layout->frame_border.right;
- borders->visible.bottom = layout->frame_border.bottom;
-
- borders->invisible = layout->invisible_border;
-
- draggable_borders = meta_prefs_get_draggable_border_width ();
-
- if (flags & META_FRAME_ALLOWS_HORIZONTAL_RESIZE)
- {
- borders->invisible.left = MAX (borders->invisible.left,
- draggable_borders - borders->visible.left);
- borders->invisible.right = MAX (borders->invisible.right,
- draggable_borders - borders->visible.right);
- }
-
- if (flags & META_FRAME_ALLOWS_VERTICAL_RESIZE)
- {
- borders->invisible.bottom = MAX (borders->invisible.bottom,
- draggable_borders - borders->visible.bottom);
-
- /* borders.visible.top is the height of the *title bar*. We can't do the same
- * algorithm here, titlebars are expectedly much bigger. Just subtract a couple
- * pixels to get a proper feel. */
- if (type != META_FRAME_TYPE_ATTACHED)
- borders->invisible.top = MAX (borders->invisible.top, draggable_borders - 2);
- }
-
- borders->total.left = borders->invisible.left + borders->visible.left;
- borders->total.right = borders->invisible.right + borders->visible.right;
- borders->total.bottom = borders->invisible.bottom + borders->visible.bottom;
- borders->total.top = borders->invisible.top + borders->visible.top;
-
- /* Scale geometry for HiDPI, see comment in meta_frame_layout_draw_with_style() */
- scale_border (&borders->visible, scale);
- scale_border (&borders->invisible, scale);
- scale_border (&borders->total, scale);
-}
-
-int
-meta_theme_get_window_scaling_factor (void)
-{
- GdkScreen *screen;
- GValue value = G_VALUE_INIT;
-
- g_value_init (&value, G_TYPE_INT);
-
- screen = gdk_screen_get_default ();
- if (gdk_screen_get_setting (screen, "gdk-window-scaling-factor", &value))
- return g_value_get_int (&value);
- else
- return 1;
-}
-
-void
-meta_frame_layout_apply_scale (const MetaFrameLayout *layout,
- PangoFontDescription *font_desc)
-{
- int size = pango_font_description_get_size (font_desc);
- double scale = layout->title_scale / meta_theme_get_window_scaling_factor ();
- pango_font_description_set_size (font_desc, MAX (size * scale, 1));
-}
-
-static MetaButtonSpace*
-rect_for_function (MetaFrameGeometry *fgeom,
- MetaFrameFlags flags,
- MetaButtonFunction function,
- MetaTheme *theme)
-{
- switch (function)
- {
- case META_BUTTON_FUNCTION_MENU:
- if (flags & META_FRAME_ALLOWS_MENU)
- return &fgeom->menu_rect;
- else
- return NULL;
- case META_BUTTON_FUNCTION_MINIMIZE:
- if (flags & META_FRAME_ALLOWS_MINIMIZE)
- return &fgeom->min_rect;
- else
- return NULL;
- case META_BUTTON_FUNCTION_MAXIMIZE:
- if (flags & META_FRAME_ALLOWS_MAXIMIZE)
- return &fgeom->max_rect;
- else
- return NULL;
- case META_BUTTON_FUNCTION_CLOSE:
- if (flags & META_FRAME_ALLOWS_DELETE)
- return &fgeom->close_rect;
- else
- return NULL;
-
- case META_BUTTON_FUNCTION_LAST:
- return NULL;
- }
-
- return NULL;
-}
-
-static gboolean
-strip_button (MetaButtonSpace *func_rects[MAX_BUTTONS_PER_CORNER],
- int *n_rects,
- MetaButtonSpace *to_strip)
-{
- int i;
-
- i = 0;
- while (i < *n_rects)
- {
- if (func_rects[i] == to_strip)
- {
- *n_rects -= 1;
-
- /* shift the other rects back in the array */
- while (i < *n_rects)
- {
- func_rects[i] = func_rects[i+1];
-
- ++i;
- }
-
- func_rects[i] = NULL;
-
- return TRUE;
- }
-
- ++i;
- }
-
- return FALSE; /* did not strip anything */
-}
-
-static void
-get_padding_and_border (GtkStyleContext *style,
- GtkBorder *border)
-{
- GtkBorder tmp;
- GtkStateFlags state = gtk_style_context_get_state (style);
-
- gtk_style_context_get_border (style, state, border);
- gtk_style_context_get_padding (style, state, &tmp);
-
- border->left += tmp.left;
- border->top += tmp.top;
- border->right += tmp.right;
- border->bottom += tmp.bottom;
-}
-
-static void
-get_min_size (GtkStyleContext *style,
- GtkRequisition *requisition)
-{
- gtk_style_context_get (style, gtk_style_context_get_state (style),
- "min-width", &requisition->width,
- "min-height", &requisition->height,
- NULL);
-}
-
-static void
-scale_border (GtkBorder *border,
- double factor)
-{
- border->left *= factor;
- border->right *= factor;
- border->top *= factor;
- border->bottom *= factor;
-}
-
-static void
-meta_frame_layout_sync_with_style (MetaFrameLayout *layout,
- MetaStyleInfo *style_info,
- MetaFrameFlags flags)
-{
- GtkStyleContext *style;
- GtkBorder border;
- GtkRequisition requisition;
- GdkRectangle clip_rect;
- int border_radius, max_radius;
-
- meta_style_info_set_flags (style_info, flags);
-
- style = style_info->styles[META_STYLE_ELEMENT_FRAME];
- get_padding_and_border (style, &layout->frame_border);
- scale_border (&layout->frame_border, layout->title_scale);
-
- gtk_render_background_get_clip (style, 0, 0, 0, 0, &clip_rect);
- layout->invisible_border.left = -clip_rect.x;
- layout->invisible_border.right = clip_rect.width + clip_rect.x;
- layout->invisible_border.top = -clip_rect.y;
- layout->invisible_border.bottom = clip_rect.height + clip_rect.y;
-
- if (layout->hide_buttons)
- layout->icon_size = 0;
-
- if (!layout->has_title && layout->hide_buttons)
- return; /* border-only - be done */
-
- style = style_info->styles[META_STYLE_ELEMENT_TITLEBAR];
- gtk_style_context_get (style, gtk_style_context_get_state (style),
- "border-radius", &border_radius,
- NULL);
- /* GTK+ currently does not allow us to look up radii of individual
- * corners; however we don't clip the client area, so with the
- * current trend of using small/no visible frame borders, most
- * themes should work fine with this.
- */
- layout->top_left_corner_rounded_radius = border_radius;
- layout->top_right_corner_rounded_radius = border_radius;
- max_radius = MIN (layout->frame_border.bottom, layout->frame_border.left);
- layout->bottom_left_corner_rounded_radius = MAX (border_radius, max_radius);
- max_radius = MIN (layout->frame_border.bottom, layout->frame_border.right);
- layout->bottom_right_corner_rounded_radius = MAX (border_radius, max_radius);
-
- get_min_size (style, &layout->titlebar_min_size);
- get_padding_and_border (style, &layout->titlebar_border);
- scale_border (&layout->titlebar_border, layout->title_scale);
-
- style = style_info->styles[META_STYLE_ELEMENT_TITLE];
- gtk_style_context_get_margin (style, gtk_style_context_get_state (style),
- &layout->title_margin);
- scale_border (&layout->title_margin, layout->title_scale);
-
- style = style_info->styles[META_STYLE_ELEMENT_BUTTON];
- get_min_size (style, &layout->button_min_size);
- get_padding_and_border (style, &layout->button_border);
- scale_border (&layout->button_border, layout->title_scale);
- gtk_style_context_get_margin (style, gtk_style_context_get_state (style),
- &layout->button_margin);
- scale_border (&layout->button_margin, layout->title_scale);
-
- style = style_info->styles[META_STYLE_ELEMENT_IMAGE];
- get_min_size (style, &requisition);
- get_padding_and_border (style, &border);
- scale_border (&border, layout->title_scale);
-
- layout->button_border.left += border.left;
- layout->button_border.right += border.right;
- layout->button_border.top += border.top;
- layout->button_border.bottom += border.bottom;
-
- gtk_style_context_get_margin (style, gtk_style_context_get_state (style),
- &border);
- layout->button_border.left += border.left;
- layout->button_border.right += border.right;
- layout->button_border.top += border.top;
- layout->button_border.bottom += border.bottom;
-
- layout->button_min_size.width = MAX(layout->button_min_size.width,
- requisition.width);
- layout->button_min_size.height = MAX(layout->button_min_size.height,
- requisition.height);
-}
-
-static void
-meta_frame_layout_calc_geometry (MetaFrameLayout *layout,
- MetaStyleInfo *style_info,
- int text_height,
- MetaFrameFlags flags,
- int client_width,
- int client_height,
- const MetaButtonLayout *button_layout,
- MetaFrameType type,
- MetaFrameGeometry *fgeom,
- MetaTheme *theme)
-{
- int i, n_left, n_right, n_left_spacers, n_right_spacers;
- int x;
- int button_y;
- int title_right_edge;
- int width, height;
- int content_width, content_height;
- int button_width, button_height;
- int min_size_for_rounding;
- int scale = meta_theme_get_window_scaling_factor ();
-
- /* the left/right rects in order; the max # of rects
- * is the number of button functions
- */
- MetaButtonSpace *left_func_rects[MAX_BUTTONS_PER_CORNER];
- MetaButtonSpace *right_func_rects[MAX_BUTTONS_PER_CORNER];
- gboolean left_buttons_has_spacer[MAX_BUTTONS_PER_CORNER];
- gboolean right_buttons_has_spacer[MAX_BUTTONS_PER_CORNER];
-
- MetaFrameBorders borders;
-
- meta_frame_layout_sync_with_style (layout, style_info, flags);
-
- meta_frame_layout_get_borders (layout, text_height,
- flags, type,
- &borders);
-
- fgeom->borders = borders;
-
- /* Scale geometry for HiDPI, see comment in meta_frame_layout_draw_with_style() */
- fgeom->content_border = layout->frame_border;
- fgeom->content_border.left += layout->titlebar_border.left * scale;
- fgeom->content_border.right += layout->titlebar_border.right * scale;
- fgeom->content_border.top += layout->titlebar_border.top * scale;
- fgeom->content_border.bottom += layout->titlebar_border.bottom * scale;
-
- width = client_width + borders.total.left + borders.total.right;
-
- height = borders.total.top + borders.total.bottom;
- if (!(flags & META_FRAME_SHADED))
- height += client_height;
-
- fgeom->width = width;
- fgeom->height = height;
-
- content_width = width -
- (fgeom->content_border.left + borders.invisible.left) -
- (fgeom->content_border.right + borders.invisible.right);
- content_height = borders.visible.top - fgeom->content_border.top - fgeom->content_border.bottom;
-
- button_width = MAX ((int)layout->icon_size, layout->button_min_size.width) +
- layout->button_border.left + layout->button_border.right;
- button_height = MAX ((int)layout->icon_size, layout->button_min_size.height) +
- layout->button_border.top + layout->button_border.bottom;
- button_width *= scale;
- button_height *= scale;
-
- /* FIXME all this code sort of pretends that duplicate buttons
- * with the same function are allowed, but that breaks the
- * code in frames.c, so isn't really allowed right now.
- * Would need left_close_rect, right_close_rect, etc.
- */
-
- /* Init all button rects to 0, lame hack */
- memset (ADDRESS_OF_BUTTON_RECTS (fgeom), '\0',
- LENGTH_OF_BUTTON_RECTS);
-
- n_left = 0;
- n_right = 0;
- n_left_spacers = 0;
- n_right_spacers = 0;
-
- if (!layout->hide_buttons)
- {
- /* Try to fill in rects */
- for (i = 0; i < MAX_BUTTONS_PER_CORNER && button_layout->left_buttons[i] != META_BUTTON_FUNCTION_LAST; i++)
- {
- left_func_rects[n_left] = rect_for_function (fgeom, flags,
- button_layout->left_buttons[i],
- theme);
- if (left_func_rects[n_left] != NULL)
- {
- left_buttons_has_spacer[n_left] = button_layout->left_buttons_has_spacer[i];
- if (button_layout->left_buttons_has_spacer[i])
- ++n_left_spacers;
-
- ++n_left;
- }
- }
-
- for (i = 0; i < MAX_BUTTONS_PER_CORNER && button_layout->right_buttons[i] != META_BUTTON_FUNCTION_LAST; i++)
- {
- right_func_rects[n_right] = rect_for_function (fgeom, flags,
- button_layout->right_buttons[i],
- theme);
- if (right_func_rects[n_right] != NULL)
- {
- right_buttons_has_spacer[n_right] = button_layout->right_buttons_has_spacer[i];
- if (button_layout->right_buttons_has_spacer[i])
- ++n_right_spacers;
-
- ++n_right;
- }
- }
- }
-
- /* Be sure buttons fit */
- while (n_left > 0 || n_right > 0)
- {
- int space_used_by_buttons;
-
- space_used_by_buttons = 0;
-
- space_used_by_buttons += layout->button_margin.left * scale * n_left;
- space_used_by_buttons += button_width * n_left;
- space_used_by_buttons += layout->button_margin.right * scale * n_left;
- space_used_by_buttons += (button_width * 0.75) * n_left_spacers;
- space_used_by_buttons += layout->titlebar_spacing * scale * MAX (n_left - 1, 0);
-
- space_used_by_buttons += layout->button_margin.left * scale * n_right;
- space_used_by_buttons += button_width * n_right;
- space_used_by_buttons += layout->button_margin.right * scale * n_right;
- space_used_by_buttons += (button_width * 0.75) * n_right_spacers;
- space_used_by_buttons += layout->titlebar_spacing * scale * MAX (n_right - 1, 0);
-
- if (space_used_by_buttons <= content_width)
- break; /* Everything fits, bail out */
-
- /* First try to remove separators */
- if (n_left_spacers > 0)
- {
- left_buttons_has_spacer[--n_left_spacers] = FALSE;
- continue;
- }
- else if (n_right_spacers > 0)
- {
- right_buttons_has_spacer[--n_right_spacers] = FALSE;
- continue;
- }
-
- /* Otherwise we need to shave out a button. Shave
- * min, max, close, then menu (menu is most useful);
- * prefer the default button locations.
- */
- if (strip_button (left_func_rects, &n_left, &fgeom->min_rect))
- continue;
- else if (strip_button (right_func_rects, &n_right, &fgeom->min_rect))
- continue;
- else if (strip_button (left_func_rects, &n_left, &fgeom->max_rect))
- continue;
- else if (strip_button (right_func_rects, &n_right, &fgeom->max_rect))
- continue;
- else if (strip_button (left_func_rects, &n_left, &fgeom->close_rect))
- continue;
- else if (strip_button (right_func_rects, &n_right, &fgeom->close_rect))
- continue;
- else if (strip_button (right_func_rects, &n_right, &fgeom->menu_rect))
- continue;
- else if (strip_button (left_func_rects, &n_left, &fgeom->menu_rect))
- continue;
- else
- {
- meta_bug ("Could not find a button to strip. n_left = %d n_right = %d",
- n_left, n_right);
- }
- }
-
- /* Save the button layout */
- fgeom->button_layout = *button_layout;
- fgeom->n_left_buttons = n_left;
- fgeom->n_right_buttons = n_right;
-
- /* center buttons vertically */
- button_y = fgeom->content_border.top + borders.invisible.top +
- (content_height - button_height) / 2;
-
- /* right edge of farthest-right button */
- x = width - fgeom->content_border.right - borders.invisible.right;
-
- i = n_right - 1;
- while (i >= 0)
- {
- MetaButtonSpace *rect;
-
- if (x < 0) /* if we go negative, leave the buttons we don't get to as 0-width */
- break;
-
- x -= layout->button_margin.right * scale;
-
- rect = right_func_rects[i];
- rect->visible.x = x - button_width;
- if (right_buttons_has_spacer[i])
- rect->visible.x -= (button_width * 0.75);
-
- rect->visible.y = button_y;
- rect->visible.width = button_width;
- rect->visible.height = button_height;
-
- if (flags & META_FRAME_MAXIMIZED ||
- flags & META_FRAME_TILED_LEFT ||
- flags & META_FRAME_TILED_RIGHT)
- {
- rect->clickable.x = rect->visible.x;
- rect->clickable.y = 0;
- rect->clickable.width = rect->visible.width;
- rect->clickable.height = button_height + button_y;
-
- if (i == n_right - 1)
- rect->clickable.width += fgeom->content_border.right;
-
- }
- else
- memmove (&(rect->clickable), &(rect->visible), sizeof (rect->clickable));
-
- x = rect->visible.x - layout->button_margin.left * scale;
-
- if (i > 0)
- x -= layout->titlebar_spacing * scale;
-
- --i;
- }
-
- /* save right edge of titlebar for later use */
- title_right_edge = x;
-
- /* Now x changes to be position from the left and we go through
- * the left-side buttons
- */
- x = fgeom->content_border.left + borders.invisible.left;
- for (i = 0; i < n_left; i++)
- {
- MetaButtonSpace *rect;
-
- x += layout->button_margin.left * scale;
-
- rect = left_func_rects[i];
-
- rect->visible.x = x;
- rect->visible.y = button_y;
- rect->visible.width = button_width;
- rect->visible.height = button_height;
-
- if (flags & META_FRAME_MAXIMIZED)
- {
- if (i==0)
- {
- rect->clickable.x = 0;
- rect->clickable.width = button_width + x;
- }
- else
- {
- rect->clickable.x = rect->visible.x;
- rect->clickable.width = button_width;
- }
-
- rect->clickable.y = 0;
- rect->clickable.height = button_height + button_y;
- }
- else
- memmove (&(rect->clickable), &(rect->visible), sizeof (rect->clickable));
-
- x = rect->visible.x + rect->visible.width + layout->button_margin.right * scale;
- if (i < n_left - 1)
- x += layout->titlebar_spacing * scale;
- if (left_buttons_has_spacer[i])
- x += (button_width * 0.75);
- }
-
- /* Center vertically in the available content area */
- fgeom->title_rect.x = x;
- fgeom->title_rect.y = fgeom->content_border.top + borders.invisible.top +
- (content_height - text_height) / 2;
- fgeom->title_rect.width = title_right_edge - fgeom->title_rect.x;
- fgeom->title_rect.height = text_height;
-
- /* Nuke title if it won't fit */
- if (fgeom->title_rect.width < 0 ||
- fgeom->title_rect.height < 0)
- {
- fgeom->title_rect.width = 0;
- fgeom->title_rect.height = 0;
- }
-
- if (flags & META_FRAME_SHADED)
- min_size_for_rounding = 0;
- else
- min_size_for_rounding = 5 * scale;
-
- fgeom->top_left_corner_rounded_radius = 0;
- fgeom->top_right_corner_rounded_radius = 0;
- fgeom->bottom_left_corner_rounded_radius = 0;
- fgeom->bottom_right_corner_rounded_radius = 0;
-
- if (borders.visible.top + borders.visible.left >= min_size_for_rounding)
- fgeom->top_left_corner_rounded_radius = layout->top_left_corner_rounded_radius * scale;
- if (borders.visible.top + borders.visible.right >= min_size_for_rounding)
- fgeom->top_right_corner_rounded_radius = layout->top_right_corner_rounded_radius * scale;
-
- if (borders.visible.bottom + borders.visible.left >= min_size_for_rounding)
- fgeom->bottom_left_corner_rounded_radius = layout->bottom_left_corner_rounded_radius * scale;
- if (borders.visible.bottom + borders.visible.right >= min_size_for_rounding)
- fgeom->bottom_right_corner_rounded_radius = layout->bottom_right_corner_rounded_radius * scale;
-}
-
-static void
-get_button_rect (MetaButtonType type,
- const MetaFrameGeometry *fgeom,
- GdkRectangle *rect)
-{
- switch (type)
- {
- case META_BUTTON_TYPE_CLOSE:
- *rect = fgeom->close_rect.visible;
- break;
-
- case META_BUTTON_TYPE_MAXIMIZE:
- *rect = fgeom->max_rect.visible;
- break;
-
- case META_BUTTON_TYPE_MINIMIZE:
- *rect = fgeom->min_rect.visible;
- break;
-
- case META_BUTTON_TYPE_MENU:
- *rect = fgeom->menu_rect.visible;
- break;
-
- default:
- case META_BUTTON_TYPE_LAST:
- g_assert_not_reached ();
- break;
- }
-}
-
-static const char *
-get_class_from_button_type (MetaButtonType type)
-{
- switch (type)
- {
- case META_BUTTON_TYPE_CLOSE:
- return "close";
- case META_BUTTON_TYPE_MAXIMIZE:
- return "maximize";
- case META_BUTTON_TYPE_MINIMIZE:
- return "minimize";
- default:
- return NULL;
- }
-}
-
-static void
-meta_frame_layout_draw_with_style (MetaFrameLayout *layout,
- MetaStyleInfo *style_info,
- cairo_t *cr,
- const MetaFrameGeometry *fgeom,
- PangoLayout *title_layout,
- MetaFrameFlags flags,
- MetaButtonState button_states[META_BUTTON_TYPE_LAST],
- cairo_surface_t *mini_icon)
-{
- GtkStyleContext *style;
- GtkStateFlags state;
- MetaButtonType button_type;
- GdkRectangle visible_rect;
- GdkRectangle titlebar_rect;
- GdkRectangle button_rect;
- const MetaFrameBorders *borders;
- cairo_surface_t *frame_surface;
- double xscale, yscale;
- int scale;
-
- /* We opt out of GTK+/Clutter's HiDPI handling, so we have to do the scaling
- * ourselves; the nitty-gritty is a bit confusing, so here is an overview:
- * - the values in MetaFrameLayout are always as they appear in the theme,
- * i.e. unscaled
- * - calculated values (borders, MetaFrameGeometry) include the scale - as
- * the geometry is comprised of scaled decorations and the client size
- * which we must not scale, we don't have another option
- * - for drawing, we scale the canvas to have GTK+ render elements (borders,
- * radii, ...) at the correct scale - as a result, we have to "unscale"
- * the geometry again to not apply the scaling twice
- * - As per commit e36b629c GTK expects the device scale to be set and match
- * the final scaling or the surface caching won't take this in account
- * breaking -gtk-scaled items.
- */
- scale = meta_theme_get_window_scaling_factor ();
- frame_surface = cairo_get_target (cr);
- cairo_surface_get_device_scale (frame_surface, &xscale, &yscale);
- cairo_surface_set_device_scale (frame_surface, scale, scale);
-
- borders = &fgeom->borders;
-
- visible_rect.x = borders->invisible.left / scale;
- visible_rect.y = borders->invisible.top / scale;
- visible_rect.width = (fgeom->width - borders->invisible.left - borders->invisible.right) / scale;
- visible_rect.height = (fgeom->height - borders->invisible.top - borders->invisible.bottom) / scale;
-
- meta_style_info_set_flags (style_info, flags);
-
- style = style_info->styles[META_STYLE_ELEMENT_FRAME];
- gtk_render_background (style, cr,
- visible_rect.x, visible_rect.y,
- visible_rect.width, visible_rect.height);
- gtk_render_frame (style, cr,
- visible_rect.x, visible_rect.y,
- visible_rect.width, visible_rect.height);
-
- titlebar_rect.x = visible_rect.x;
- titlebar_rect.y = visible_rect.y;
- titlebar_rect.width = visible_rect.width;
- titlebar_rect.height = borders->visible.top / scale;
-
- style = style_info->styles[META_STYLE_ELEMENT_TITLEBAR];
- gtk_render_background (style, cr,
- titlebar_rect.x, titlebar_rect.y,
- titlebar_rect.width, titlebar_rect.height);
- gtk_render_frame (style, cr,
- titlebar_rect.x, titlebar_rect.y,
- titlebar_rect.width, titlebar_rect.height);
-
- if (layout->has_title && title_layout)
- {
- PangoRectangle logical;
- int text_width, x, y;
-
- pango_layout_set_width (title_layout, -1);
- pango_layout_get_pixel_extents (title_layout, NULL, &logical);
-
- text_width = MIN(fgeom->title_rect.width / scale, logical.width);
-
- if (text_width < logical.width)
- pango_layout_set_width (title_layout, PANGO_SCALE * text_width);
-
- /* Center within the frame if possible */
- x = titlebar_rect.x + (titlebar_rect.width - text_width) / 2;
- y = titlebar_rect.y + (titlebar_rect.height - logical.height) / 2;
-
- if (x < fgeom->title_rect.x / scale)
- x = fgeom->title_rect.x / scale;
- else if (x + text_width > (fgeom->title_rect.x + fgeom->title_rect.width) / scale)
- x = (fgeom->title_rect.x + fgeom->title_rect.width) / scale - text_width;
-
- style = style_info->styles[META_STYLE_ELEMENT_TITLE];
- gtk_render_layout (style, cr, x, y, title_layout);
- }
-
- style = style_info->styles[META_STYLE_ELEMENT_BUTTON];
- state = gtk_style_context_get_state (style);
- for (button_type = META_BUTTON_TYPE_CLOSE; button_type < META_BUTTON_TYPE_LAST; button_type++)
- {
- const char *button_class = get_class_from_button_type (button_type);
- if (button_class)
- gtk_style_context_add_class (style, button_class);
-
- get_button_rect (button_type, fgeom, &button_rect);
-
- button_rect.x /= scale;
- button_rect.y /= scale;
- button_rect.width /= scale;
- button_rect.height /= scale;
-
- if (button_states[button_type] == META_BUTTON_STATE_PRELIGHT)
- gtk_style_context_set_state (style, state | GTK_STATE_PRELIGHT);
- else if (button_states[button_type] == META_BUTTON_STATE_PRESSED)
- gtk_style_context_set_state (style, state | GTK_STATE_ACTIVE);
- else
- gtk_style_context_set_state (style, state);
-
- cairo_save (cr);
-
- if (button_rect.width > 0 && button_rect.height > 0)
- {
- cairo_surface_t *surface = NULL;
- const char *icon_name = NULL;
-
- gtk_render_background (style, cr,
- button_rect.x, button_rect.y,
- button_rect.width, button_rect.height);
- gtk_render_frame (style, cr,
- button_rect.x, button_rect.y,
- button_rect.width, button_rect.height);
-
- switch (button_type)
- {
- case META_BUTTON_TYPE_CLOSE:
- icon_name = "window-close-symbolic";
- break;
- case META_BUTTON_TYPE_MAXIMIZE:
- if (flags & META_FRAME_MAXIMIZED)
- icon_name = "window-restore-symbolic";
- else
- icon_name = "window-maximize-symbolic";
- break;
- case META_BUTTON_TYPE_MINIMIZE:
- icon_name = "window-minimize-symbolic";
- break;
- case META_BUTTON_TYPE_MENU:
- icon_name = "open-menu-symbolic";
- break;
- default:
- icon_name = NULL;
- break;
- }
-
- if (icon_name)
- {
- GtkIconTheme *theme = gtk_icon_theme_get_default ();
- g_autoptr (GtkIconInfo) info = NULL;
- g_autoptr (GdkPixbuf) pixbuf = NULL;
-
- info = gtk_icon_theme_lookup_icon_for_scale (theme, icon_name,
- layout->icon_size, scale, 0);
- pixbuf = gtk_icon_info_load_symbolic_for_context (info, style, NULL, NULL);
- surface = gdk_cairo_surface_create_from_pixbuf (pixbuf, scale, NULL);
- }
-
- if (surface)
- {
- float width, height;
- int x, y;
-
- width = cairo_image_surface_get_width (surface) / scale;
- height = cairo_image_surface_get_height (surface) / scale;
- x = button_rect.x + (button_rect.width - layout->icon_size) / 2;
- y = button_rect.y + (button_rect.height - layout->icon_size) / 2;
-
- cairo_translate (cr, x, y);
- cairo_scale (cr,
- layout->icon_size / width,
- layout->icon_size / height);
- cairo_set_source_surface (cr, surface, 0, 0);
- cairo_paint (cr);
-
- cairo_surface_destroy (surface);
- }
- }
- cairo_restore (cr);
- if (button_class)
- gtk_style_context_remove_class (style, button_class);
- gtk_style_context_set_state (style, state);
- }
-
- cairo_surface_set_device_scale (frame_surface, xscale, yscale);
-}
-
-/**
- * meta_theme_get_default: (skip)
- *
- */
-MetaTheme*
-meta_theme_get_default (void)
-{
- static MetaTheme *theme = NULL;
- int frame_type;
-
- if (theme)
- return theme;
-
- theme = meta_theme_new ();
-
- for (frame_type = 0; frame_type < META_FRAME_TYPE_LAST; frame_type++)
- {
- MetaFrameLayout *layout = meta_frame_layout_new ();
-
- switch (frame_type)
- {
- case META_FRAME_TYPE_NORMAL:
- case META_FRAME_TYPE_DIALOG:
- case META_FRAME_TYPE_MODAL_DIALOG:
- case META_FRAME_TYPE_ATTACHED:
- break;
- case META_FRAME_TYPE_MENU:
- case META_FRAME_TYPE_UTILITY:
- layout->title_scale = PANGO_SCALE_SMALL;
- break;
- case META_FRAME_TYPE_BORDER:
- layout->has_title = FALSE;
- layout->hide_buttons = TRUE;
- break;
- default:
- g_assert_not_reached ();
- }
-
- theme->layouts[frame_type] = layout;
- }
- return theme;
-}
-
-/**
- * meta_theme_new: (skip)
- *
- */
-MetaTheme*
-meta_theme_new (void)
-{
- return g_new0 (MetaTheme, 1);
-}
-
-
-void
-meta_theme_free (MetaTheme *theme)
-{
- int i;
-
- g_return_if_fail (theme != NULL);
-
- for (i = 0; i < META_FRAME_TYPE_LAST; i++)
- if (theme->layouts[i])
- meta_frame_layout_free (theme->layouts[i]);
-
- g_free (theme);
-}
-
-MetaFrameLayout*
-meta_theme_get_frame_layout (MetaTheme *theme,
- MetaFrameType type)
-{
- g_return_val_if_fail (type < META_FRAME_TYPE_LAST, NULL);
-
- return theme->layouts[type];
-}
-
-static GtkStyleContext *
-create_style_context (GType widget_type,
- GtkStyleContext *parent_style,
- GtkCssProvider *provider,
- const char *object_name,
- const char *first_class,
- ...)
-{
- GtkStyleContext *style;
- GtkStateFlags state;
- GtkWidgetPath *path;
- const char *name;
- va_list ap;
-
- style = gtk_style_context_new ();
- gtk_style_context_set_scale (style, meta_theme_get_window_scaling_factor ());
- gtk_style_context_set_parent (style, parent_style);
-
- if (parent_style)
- path = gtk_widget_path_copy (gtk_style_context_get_path (parent_style));
- else
- path = gtk_widget_path_new ();
-
- gtk_widget_path_append_type (path, widget_type);
-
- if (object_name)
- gtk_widget_path_iter_set_object_name (path, -1, object_name);
-
- state = gtk_style_context_get_state (style);
- if (meta_get_locale_direction() == META_LOCALE_DIRECTION_RTL)
- {
- state |= GTK_STATE_FLAG_DIR_RTL;
- state &= ~GTK_STATE_FLAG_DIR_LTR;
- }
- else
- {
- state |= GTK_STATE_FLAG_DIR_LTR;
- state &= ~GTK_STATE_FLAG_DIR_RTL;
- }
- gtk_style_context_set_state (style, state);
-
- va_start (ap, first_class);
- for (name = first_class; name; name = va_arg (ap, const char *))
- gtk_widget_path_iter_add_class (path, -1, name);
- va_end (ap);
-
- gtk_style_context_set_path (style, path);
- gtk_widget_path_unref (path);
-
- gtk_style_context_add_provider (style, GTK_STYLE_PROVIDER (provider),
- GTK_STYLE_PROVIDER_PRIORITY_SETTINGS);
-
- return style;
-}
-
-static inline GtkCssProvider *
-get_css_provider_for_theme_name (const gchar *theme_name,
- const gchar *variant)
-{
- static GtkCssProvider *default_provider = NULL;
-
- if (!theme_name || *theme_name == '\0')
- {
- if (G_UNLIKELY (default_provider == NULL))
- default_provider = gtk_css_provider_new ();
-
- return default_provider;
- }
-
- return gtk_css_provider_get_named (theme_name, variant);
-}
-
-MetaStyleInfo *
-meta_theme_create_style_info (GdkScreen *screen,
- const gchar *variant)
-{
- MetaStyleInfo *style_info;
- GtkCssProvider *provider;
- char *theme_name;
-
- g_object_get (gtk_settings_get_for_screen (screen),
- "gtk-theme-name", &theme_name,
- NULL);
-
- provider = get_css_provider_for_theme_name (theme_name, variant);
- g_free (theme_name);
-
- style_info = g_new0 (MetaStyleInfo, 1);
- style_info->refcount = 1;
-
- style_info->styles[META_STYLE_ELEMENT_WINDOW] =
- create_style_context (META_TYPE_FRAMES,
- NULL,
- provider,
- "window",
- GTK_STYLE_CLASS_BACKGROUND,
- "ssd",
- NULL);
- style_info->styles[META_STYLE_ELEMENT_FRAME] =
- create_style_context (META_TYPE_FRAMES,
- style_info->styles[META_STYLE_ELEMENT_WINDOW],
- provider,
- "decoration",
- NULL);
- style_info->styles[META_STYLE_ELEMENT_TITLEBAR] =
- create_style_context (GTK_TYPE_HEADER_BAR,
- style_info->styles[META_STYLE_ELEMENT_FRAME],
- provider,
- "headerbar",
- GTK_STYLE_CLASS_TITLEBAR,
- GTK_STYLE_CLASS_HORIZONTAL,
- "default-decoration",
- NULL);
- style_info->styles[META_STYLE_ELEMENT_TITLE] =
- create_style_context (GTK_TYPE_LABEL,
- style_info->styles[META_STYLE_ELEMENT_TITLEBAR],
- provider,
- "label",
- GTK_STYLE_CLASS_TITLE,
- NULL);
- style_info->styles[META_STYLE_ELEMENT_BUTTON] =
- create_style_context (GTK_TYPE_BUTTON,
- style_info->styles[META_STYLE_ELEMENT_TITLEBAR],
- provider,
- "button",
- "titlebutton",
- NULL);
- style_info->styles[META_STYLE_ELEMENT_IMAGE] =
- create_style_context (GTK_TYPE_IMAGE,
- style_info->styles[META_STYLE_ELEMENT_BUTTON],
- provider,
- "image",
- NULL);
- return style_info;
-}
-
-MetaStyleInfo *
-meta_style_info_ref (MetaStyleInfo *style_info)
-{
- g_return_val_if_fail (style_info != NULL, NULL);
- g_return_val_if_fail (style_info->refcount > 0, NULL);
-
- g_atomic_int_inc ((volatile int *)&style_info->refcount);
- return style_info;
-}
-
-void
-meta_style_info_unref (MetaStyleInfo *style_info)
-{
- g_return_if_fail (style_info != NULL);
- g_return_if_fail (style_info->refcount > 0);
-
- if (g_atomic_int_dec_and_test ((volatile int *)&style_info->refcount))
- {
- int i;
- for (i = 0; i < META_STYLE_ELEMENT_LAST; i++)
- g_object_unref (style_info->styles[i]);
- g_free (style_info);
- }
-}
-
-static void
-add_toplevel_class (GtkStyleContext *style,
- const char *class_name)
-{
- if (gtk_style_context_get_parent (style))
- {
- GtkWidgetPath *path;
-
- path = gtk_widget_path_copy (gtk_style_context_get_path (style));
- gtk_widget_path_iter_add_class (path, 0, class_name);
- gtk_style_context_set_path (style, path);
- gtk_widget_path_unref (path);
- }
- else
- gtk_style_context_add_class (style, class_name);
-}
-
-static void
-remove_toplevel_class (GtkStyleContext *style,
- const char *class_name)
-{
- if (gtk_style_context_get_parent (style))
- {
- GtkWidgetPath *path;
-
- path = gtk_widget_path_copy (gtk_style_context_get_path (style));
- gtk_widget_path_iter_remove_class (path, 0, class_name);
- gtk_style_context_set_path (style, path);
- gtk_widget_path_unref (path);
- }
- else
- gtk_style_context_remove_class (style, class_name);
-}
-
-void
-meta_style_info_set_flags (MetaStyleInfo *style_info,
- MetaFrameFlags flags)
-{
- GtkStyleContext *style;
- const char *class_name = NULL;
- gboolean backdrop;
- GtkStateFlags state;
- int i;
-
- backdrop = !(flags & META_FRAME_HAS_FOCUS);
-
- if (flags & META_FRAME_MAXIMIZED)
- class_name = "maximized";
- else if (flags & META_FRAME_TILED_LEFT ||
- flags & META_FRAME_TILED_RIGHT)
- class_name = "tiled";
-
- for (i = 0; i < META_STYLE_ELEMENT_LAST; i++)
- {
- style = style_info->styles[i];
-
- state = gtk_style_context_get_state (style);
- if (backdrop)
- gtk_style_context_set_state (style, state | GTK_STATE_FLAG_BACKDROP);
- else
- gtk_style_context_set_state (style, state & ~GTK_STATE_FLAG_BACKDROP);
-
- remove_toplevel_class (style, "maximized");
- remove_toplevel_class (style, "tiled");
-
- if (class_name)
- add_toplevel_class (style, class_name);
- }
-}
-
-PangoFontDescription*
-meta_style_info_create_font_desc (MetaStyleInfo *style_info)
-{
- PangoFontDescription *font_desc;
- const PangoFontDescription *override = meta_prefs_get_titlebar_font ();
- GtkStyleContext *context = style_info->styles[META_STYLE_ELEMENT_TITLE];
-
- gtk_style_context_get (context,
- gtk_style_context_get_state (context),
- "font", &font_desc, NULL);
-
- if (override)
- pango_font_description_merge (font_desc, override, TRUE);
-
- return font_desc;
-}
-
-void
-meta_theme_draw_frame (MetaTheme *theme,
- MetaStyleInfo *style_info,
- cairo_t *cr,
- MetaFrameType type,
- MetaFrameFlags flags,
- int client_width,
- int client_height,
- PangoLayout *title_layout,
- int text_height,
- const MetaButtonLayout *button_layout,
- MetaButtonState button_states[META_BUTTON_TYPE_LAST],
- cairo_surface_t *mini_icon)
-{
- MetaFrameGeometry fgeom;
- MetaFrameLayout *layout;
-
- g_return_if_fail (type < META_FRAME_TYPE_LAST);
-
- layout = theme->layouts[type];
-
- /* Parser is not supposed to allow this currently */
- if (layout == NULL)
- return;
-
- meta_frame_layout_calc_geometry (layout,
- style_info,
- text_height,
- flags,
- client_width, client_height,
- button_layout,
- type,
- &fgeom,
- theme);
-
- meta_frame_layout_draw_with_style (layout,
- style_info,
- cr,
- &fgeom,
- title_layout,
- flags,
- button_states,
- mini_icon);
-}
-
-void
-meta_theme_get_frame_borders (MetaTheme *theme,
- MetaStyleInfo *style_info,
- MetaFrameType type,
- int text_height,
- MetaFrameFlags flags,
- MetaFrameBorders *borders)
-{
- MetaFrameLayout *layout;
-
- g_return_if_fail (type < META_FRAME_TYPE_LAST);
-
- layout = theme->layouts[type];
-
- meta_frame_borders_clear (borders);
-
- /* Parser is not supposed to allow this currently */
- if (layout == NULL)
- return;
-
- meta_frame_layout_sync_with_style (layout, style_info, flags);
-
- meta_frame_layout_get_borders (layout,
- text_height,
- flags, type,
- borders);
-}
-
-void
-meta_theme_calc_geometry (MetaTheme *theme,
- MetaStyleInfo *style_info,
- MetaFrameType type,
- int text_height,
- MetaFrameFlags flags,
- int client_width,
- int client_height,
- const MetaButtonLayout *button_layout,
- MetaFrameGeometry *fgeom)
-{
- MetaFrameLayout *layout;
-
- g_return_if_fail (type < META_FRAME_TYPE_LAST);
-
- layout = theme->layouts[type];
-
- /* Parser is not supposed to allow this currently */
- if (layout == NULL)
- return;
-
- meta_frame_layout_calc_geometry (layout,
- style_info,
- text_height,
- flags,
- client_width, client_height,
- button_layout,
- type,
- fgeom,
- theme);
-}
-
-/**
- * meta_pango_font_desc_get_text_height:
- * @font_desc: the font
- * @context: the context of the font
- *
- * Returns the height of the letters in a particular font.
- *
- * Returns: the height of the letters
- */
-int
-meta_pango_font_desc_get_text_height (const PangoFontDescription *font_desc,
- PangoContext *context)
-{
- PangoFontMetrics *metrics;
- PangoLanguage *lang;
- int retval;
-
- lang = pango_context_get_language (context);
- metrics = pango_context_get_metrics (context, font_desc, lang);
-
- retval = PANGO_PIXELS (pango_font_metrics_get_ascent (metrics) +
- pango_font_metrics_get_descent (metrics));
-
- pango_font_metrics_unref (metrics);
-
- return retval;
-}
-
-/**
- * meta_frame_type_to_string:
- * @type: a #MetaFrameType
- *
- * Converts a frame type enum value to the name string that would
- * appear in the theme definition file.
- *
- * Return value: the string value
- */
-const char*
-meta_frame_type_to_string (MetaFrameType type)
-{
- switch (type)
- {
- case META_FRAME_TYPE_NORMAL:
- return "normal";
- case META_FRAME_TYPE_DIALOG:
- return "dialog";
- case META_FRAME_TYPE_MODAL_DIALOG:
- return "modal_dialog";
- case META_FRAME_TYPE_UTILITY:
- return "utility";
- case META_FRAME_TYPE_MENU:
- return "menu";
- case META_FRAME_TYPE_BORDER:
- return "border";
- case META_FRAME_TYPE_ATTACHED:
- return "attached";
-#if 0
- case META_FRAME_TYPE_TOOLBAR:
- return "toolbar";
-#endif
- case META_FRAME_TYPE_LAST:
- break;
- }
-
- return "<unknown>";
-}
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