110 lines
2.5 KiB
C++
110 lines
2.5 KiB
C++
// Scintilla source code edit control
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// Wrappers.h - Encapsulation of GLib, GObject, Pango, Cairo, GTK, and GDK types
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// Copyright 2022 by Neil Hodgson <neilh@scintilla.org>
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// The License.txt file describes the conditions under which this software may be distributed.
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#ifndef WRAPPERS_H
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#define WRAPPERS_H
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namespace Scintilla::Internal {
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// GLib
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struct GFreeReleaser {
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template <class T>
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void operator()(T *object) noexcept {
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g_free(object);
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}
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};
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using UniqueStr = std::unique_ptr<gchar, GFreeReleaser>;
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// GObject
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struct GObjectReleaser {
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// Called by unique_ptr to destroy/free the object
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template <class T>
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void operator()(T *object) noexcept {
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g_object_unref(object);
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}
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};
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// Pango
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using UniquePangoContext = std::unique_ptr<PangoContext, GObjectReleaser>;
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using UniquePangoLayout = std::unique_ptr<PangoLayout, GObjectReleaser>;
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using UniquePangoFontMap = std::unique_ptr<PangoFontMap, GObjectReleaser>;
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struct FontDescriptionReleaser {
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void operator()(PangoFontDescription *fontDescription) noexcept {
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pango_font_description_free(fontDescription);
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}
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};
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using UniquePangoFontDescription = std::unique_ptr<PangoFontDescription, FontDescriptionReleaser>;
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struct FontMetricsReleaser {
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void operator()(PangoFontMetrics *metrics) noexcept {
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pango_font_metrics_unref(metrics);
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}
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};
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using UniquePangoFontMetrics = std::unique_ptr<PangoFontMetrics, FontMetricsReleaser>;
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struct LayoutIterReleaser {
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// Called by unique_ptr to destroy/free the object
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void operator()(PangoLayoutIter *iter) noexcept {
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pango_layout_iter_free(iter);
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}
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};
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using UniquePangoLayoutIter = std::unique_ptr<PangoLayoutIter, LayoutIterReleaser>;
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// Cairo
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struct CairoReleaser {
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void operator()(cairo_t *context) noexcept {
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cairo_destroy(context);
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}
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};
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using UniqueCairo = std::unique_ptr<cairo_t, CairoReleaser>;
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struct CairoSurfaceReleaser {
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void operator()(cairo_surface_t *psurf) noexcept {
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cairo_surface_destroy(psurf);
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}
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};
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using UniqueCairoSurface = std::unique_ptr<cairo_surface_t, CairoSurfaceReleaser>;
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// GTK
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using UniqueIMContext = std::unique_ptr<GtkIMContext, GObjectReleaser>;
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// GDK
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struct GdkEventReleaser {
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void operator()(GdkEvent *ev) noexcept {
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gdk_event_free(ev);
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}
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};
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using UniqueGdkEvent = std::unique_ptr<GdkEvent, GdkEventReleaser>;
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inline void UnRefCursor(GdkCursor *cursor) noexcept {
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#if GTK_CHECK_VERSION(3,0,0)
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g_object_unref(cursor);
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#else
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gdk_cursor_unref(cursor);
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#endif
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}
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[[nodiscard]] inline GdkWindow *WindowFromWidget(GtkWidget *w) noexcept {
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return gtk_widget_get_window(w);
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}
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}
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#endif
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