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/*
* SPDX-FileCopyrightText: 2021~2021 CSSlayer <wengxt@gmail.com>
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
*/
#ifndef _GTK3_FCITXTHEME_H_
#define _GTK3_FCITXTHEME_H_
#include "utils.h"
#include <cairo.h>
#include <gdk/gdk.h>
#include <memory>
#include <string>
#include <unordered_map>
namespace fcitx::gtk {
enum class Gravity {
TopLeft,
TopCenter,
TopRight,
CenterLeft,
Center,
CenterRight,
BottomLeft,
BottomCenter,
BottomRight
};
enum class PageButtonAlignment {
Top,
FirstCandidate,
Center,
LastCandidate,
Bottom
};
struct MarginConfig {
void load(GKeyFile *file, const char *group);
int marginLeft, marginRight, marginTop, marginBottom;
};
struct BackgroundImageConfig {
void load(GKeyFile *file, const char *group);
std::string image;
GdkRGBA color;
GdkRGBA borderColor;
int borderWidth = 0;
std::string overlay;
Gravity gravity;
int overlayOffsetX = 0;
int overlayOffsetY = 0;
bool hideOverlayIfOversize = false;
MarginConfig margin;
MarginConfig overlayClipMargin;
};
struct HighlightBackgroundImageConfig : public BackgroundImageConfig {
void load(GKeyFile *file, const char *group);
MarginConfig clickMargin;
};
struct ActionImageConfig {
void load(GKeyFile *file, const char *group);
std::string image;
MarginConfig clickMargin;
};
struct InputPanelThemeConfig {
void load(GKeyFile *file);
GdkRGBA normalColor;
GdkRGBA highlightCandidateColor;
bool enableBlur = false;
bool fullWidthHighlight = true;
GdkRGBA highlightColor;
GdkRGBA highlightBackgroundColor;
PageButtonAlignment buttonAlignment;
BackgroundImageConfig background;
HighlightBackgroundImageConfig highlight;
MarginConfig contentMargin;
MarginConfig textMargin;
ActionImageConfig prev;
ActionImageConfig next;
MarginConfig blurMargin;
MarginConfig shadowMargin;
};
class ThemeImage {
public:
ThemeImage(const std::string &name, const BackgroundImageConfig &cfg);
ThemeImage(const std::string &name, const ActionImageConfig &cfg);
operator cairo_surface_t *() const { return image_.get(); }
auto height() const {
int height = 1;
if (image_) {
height = cairo_image_surface_get_height(image_.get());
}
return height <= 0 ? 1 : height;
}
auto width() const {
int width = 1;
if (image_) {
width = cairo_image_surface_get_width(image_.get());
}
return width <= 0 ? 1 : width;
}
auto size() const { return size_; }
bool valid() const { return valid_; }
cairo_surface_t *overlay() const { return overlay_.get(); }
auto overlayWidth() const {
int width = 1;
if (overlay_) {
width = cairo_image_surface_get_width(overlay_.get());
}
return width <= 0 ? 1 : width;
}
auto overlayHeight() const {
int height = 1;
if (overlay_) {
height = cairo_image_surface_get_height(overlay_.get());
}
return height <= 0 ? 1 : height;
}
private:
bool valid_ = false;
std::string currentText_;
uint32_t size_ = 0;
UniqueCPtr<cairo_surface_t, cairo_surface_destroy> image_;
UniqueCPtr<cairo_surface_t, cairo_surface_destroy> overlay_;
};
class Theme : public InputPanelThemeConfig {
public:
Theme();
~Theme();
void load(const std::string &name);
const ThemeImage &loadBackground(const BackgroundImageConfig &cfg);
const ThemeImage &loadAction(const ActionImageConfig &cfg);
void paint(cairo_t *c, const BackgroundImageConfig &cfg, int width,
int height, double alpha = 1.0);
void paint(cairo_t *c, const ActionImageConfig &cfg, double alpha = 1.0);
const auto &name() const { return name_; }
private:
std::unordered_map<const BackgroundImageConfig *, ThemeImage>
backgroundImageTable_;
std::unordered_map<const ActionImageConfig *, ThemeImage> actionImageTable_;
std::string name_;
};
class ClassicUIConfig {
public:
ClassicUIConfig();
~ClassicUIConfig();
void load();
std::string font_;
bool vertical_ = false;
bool wheelForPaging_ = true;
std::string themeName_ = "default";
bool useInputMethodLanguageToDisplayText_ = true;
Theme theme_;
private:
void resetThemeFileMonitor();
static void configChangedCallback(GFileMonitor *, GFile *, GFile *,
GFileMonitorEvent event_type,
gpointer user_data) {
if (event_type != G_FILE_MONITOR_EVENT_CHANGED &&
event_type != G_FILE_MONITOR_EVENT_CREATED) {
return;
}
static_cast<ClassicUIConfig *>(user_data)->load();
}
GObjectUniquePtr<GFileMonitor> monitor_;
GObjectUniquePtr<GFileMonitor> themeFileMonitor_;
};
inline void cairoSetSourceColor(cairo_t *cr, const GdkRGBA &color) {
cairo_set_source_rgba(cr, color.red, color.green, color.blue, color.alpha);
}
inline void shrink(cairo_rectangle_int_t &rect, const MarginConfig &margin) {
int newWidth = rect.width - margin.marginLeft - margin.marginRight;
int newHeight = rect.height - margin.marginTop - margin.marginBottom;
if (newWidth < 0) {
newWidth = 0;
}
if (newHeight < 0) {
newHeight = 0;
}
rect.x = rect.x + margin.marginLeft;
rect.y = rect.y + margin.marginTop;
rect.width = newWidth;
rect.height = newHeight;
}
} // namespace fcitx::gtk
#endif // _GTK3_FCITXTHEME_H_
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