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Diffstat (limited to 'src/ui/widget/shapeicon.cpp')
| -rw-r--r-- | src/ui/widget/shapeicon.cpp | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/src/ui/widget/shapeicon.cpp b/src/ui/widget/shapeicon.cpp new file mode 100644 index 0000000..6b7a9d9 --- /dev/null +++ b/src/ui/widget/shapeicon.cpp @@ -0,0 +1,117 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Authors: + * Martin Owens + * + * Copyright (C) 2020 Authors + * + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + + +#include "color.h" +#include "ui/widget/shapeicon.h" +#include "ui/icon-loader.h" + +namespace Inkscape { +namespace UI { +namespace Widget { + +/* + * This is a type of CellRenderer which you might expect to inherit from the + * pixbuf CellRenderer, but we actually need to write a Cairo surface directly + * in order to maintain HiDPI sharpness in icons. Upstream Gtk have made it clear + * that CellRenderers are going away in Gtk4 so they aren't interested in fixing + * rendering problems like the one in CellRendererPixbuf. + * + * See: https://gitlab.gnome.org/GNOME/gtk/-/issues/613 + */ + +void CellRendererItemIcon::render_vfunc(const Cairo::RefPtr<Cairo::Context>& cr, + Gtk::Widget& widget, + const Gdk::Rectangle& background_area, + const Gdk::Rectangle& cell_area, + Gtk::CellRendererState flags) +{ + std::string shape_type = _property_shape_type.get_value(); + std::string highlight = SPColor(_property_color.get_value()).toString(); + std::string cache_id = shape_type + "-" + highlight; + + // if the icon isn't cached, render it to a pixbuf + int scale = widget.get_scale_factor(); + if ( !_icon_cache[cache_id] ) { + _icon_cache[cache_id] = sp_get_shape_icon(shape_type, Gdk::RGBA(highlight), _size, scale); + } + g_return_if_fail(_icon_cache[cache_id]); + + // Center the icon in the cell area + int x = cell_area.get_x() + int((cell_area.get_width() - _size) * 0.5); + int y = cell_area.get_y() + int((cell_area.get_height() - _size) * 0.5); + + // Paint the pixbuf to a cairo surface to get HiDPI support + paint_icon(cr, widget, _icon_cache[cache_id], x, y); + + // Create an overlay icon + int clipmask = _property_clipmask.get_value(); + if (clipmask > 0) { + if (!_clip_overlay) { + _clip_overlay = sp_get_icon_pixbuf("overlay-clip", Gtk::ICON_SIZE_MENU, scale); + } + if (!_mask_overlay) { + _mask_overlay = sp_get_icon_pixbuf("overlay-mask", Gtk::ICON_SIZE_MENU, scale); + } + + if (clipmask == OVERLAY_CLIP && _clip_overlay) { + paint_icon(cr, widget, _clip_overlay, x, y); + } + if (clipmask == OVERLAY_MASK && _mask_overlay) { + paint_icon(cr, widget, _mask_overlay, x, y); + } + } + +} + +void CellRendererItemIcon::paint_icon(const Cairo::RefPtr<Cairo::Context>& cr, + Gtk::Widget& widget, + Glib::RefPtr<Gdk::Pixbuf> pixbuf, + int x, int y) +{ + cairo_surface_t *surface = gdk_cairo_surface_create_from_pixbuf( + pixbuf->gobj(), 0, widget.get_window()->gobj()); + if (!surface) return; + cairo_set_source_surface(cr->cobj(), surface, x, y); + cr->set_operator(Cairo::OPERATOR_ATOP); + cr->rectangle(x, y, _size, _size); + cr->fill(); + cairo_surface_destroy(surface); // free! +} + +void CellRendererItemIcon::get_preferred_height_vfunc(Gtk::Widget& widget, int& min_h, int& nat_h) const +{ + min_h = _size; + nat_h = _size + 4; +} + +void CellRendererItemIcon::get_preferred_width_vfunc(Gtk::Widget& widget, int& min_w, int& nat_w) const +{ + min_w = _size; + nat_w = _size + 4; +} + + +} // namespace Widget +} // namespace UI +} // namespace Inkscape + +/* + Local Variables: + mode:c++ + c-file-style:"stroustrup" + c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) + indent-tabs-mode:nil + fill-column:99 + End: +*/ +// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 : + + |