Theme.c File Reference

#include <assert.h>
#include <Objectively/JSONContext.h>
#include "ImageAtlas.h"
#include "Log.h"
#include "Theme.h"
#include "View.h"
#include "WindowController.h"

Go to the source code of this file.

Macros
#define	_Class   _Theme

Functions
Class *	_Theme (void)
static AtlasImage *	addIcon (Theme *self, const char *name, Image *image)
static void	addStylesheet (Theme *self, Stylesheet *stylesheet)
static String *	cacheKey (const FontAttributes *attributes, float pixelDensity)
	Builds the cache key for the given attributes and pixel density.
static Style *	computeStyle (const Theme *self, const View *view)
static ident	computeStyle_reduce (const ident obj, ident accumulator, ident data)
	Reducer for computeStyle.
static void	dealloc (Object *self)
static Font *	font (Theme *self, const FontAttributes *attributes, float pixelDensity)
static AtlasImage *	icon (Theme *self, const char *name)
static ImageAtlas *	icons (Theme *self)
static Image *	image (Theme *self, const char *name, float pixelDensity)
static Theme *	init (Theme *self)
static void	initialize (Class *clazz)
static void	removeStylesheet (Theme *self, Stylesheet *stylesheet)
static void	renderDeviceDidReset (Theme *self)
static void	renderDeviceWillReset (Theme *self)
static void	renderDeviceWillReset_enumerate (const Dictionary *dictionary, ident obj, ident key, ident data)
	DictionaryEnumerator for renderDeviceWillReset.
static Theme *	theme (SDL_Window *window)

Macro Definition Documentation

_Class

#define _Class   _Theme

Definition at line 34 of file Theme.c.

Function Documentation

_Theme()

Class * _Theme

(

void

)

Definition at line 334 of file Theme.c.

                    {
  static Class *clazz;
  static Once once;
 
  do_once(&once, {
    clazz = _initialize(&(const ClassDef) {
      .name = "Theme",
      .superclass = _Object(),
      .instanceSize = sizeof(Theme),
      .interfaceSize = sizeof(ThemeInterface),
      .initialize = initialize,
    });
  });
 
  return clazz;
}

addIcon()

static AtlasImage * addIcon ( Theme *  self, const char *  name, Image *  image  )

static

Definition at line 158 of file Theme.c.

                                                                        {
 
  ImageAtlas *atlas = $(self, icons);
 
  AtlasImage *icon = $(atlas, addImageWithName, name, image);
 
  if (!$(atlas, compile)) {
    MVC_LogError("Failed to compile icons after adding %s\n", name);
  }
 
  return icon;
}

addStylesheet()

static void addStylesheet ( Theme *  self, Stylesheet *  stylesheet  )

static

Definition at line 59 of file Theme.c.

                                                               {
  $((Array *) self->stylesheets, addObject, stylesheet);
}

cacheKey()

static String * cacheKey ( const FontAttributes *  attributes, float  pixelDensity  )

static

Builds the cache key for the given attributes and pixel density.

Definition at line 66 of file Theme.c.

                                                                              {
 
  String *name = $$(Font, nameWithAttributes, attributes);
  assert(name);
 
  String *key = str("%s@%g", name->chars, pixelDensity);
  assert(key);
 
  release(name);
  return key;
}

computeStyle()

static Style * computeStyle ( const Theme *  self, const View *  view  )

static

Definition at line 223 of file Theme.c.

                                                                {
 
  assert(view);
 
  Style *style = $(alloc(Style), initWithAttributes, NULL);
  assert(style);
 
  return $((Array *) self->stylesheets, reduce, computeStyle_reduce, style, (ident) view);
}

computeStyle_reduce()

static ident computeStyle_reduce ( const ident  obj, ident  accumulator, ident  data  )

static

Reducer for computeStyle.

Definition at line 182 of file Theme.c.

                                                                                 {
 
  const Stylesheet *stylesheet = obj;
 
  const View *view = data;
 
  const Array *selectors = (Array *) stylesheet->selectors;
  for (size_t i = 0; i < selectors->count; i++) {
 
    Selector *selector = $(selectors, objectAtIndex, i);
    if ($(selector, matchesView, view)) {
 
      assert(selector->style);
 
      if (MVC_LogEnabled(SDL_LOG_PRIORITY_VERBOSE)) {
 
        String *this = $((Object *) selector, description);
        String *that = $((Object *) view, description);
 
        MVC_LogVerbose("%s -> %s\n", this->chars, that->chars);
 
        release(this);
        release(that);
      }
 
      if ($(selector->style, attributeValue, "debug")) {
        SDL_TriggerBreakpoint();
      }
 
      $((Style *) accumulator, addSelector, selector);
      $((Style *) accumulator, addAttributes, selector->style->attributes);
    }
  }
 
  return accumulator;
}

dealloc()

static void dealloc ( Object *  self )

static

See also

Object::dealloc(Object *)

Definition at line 41 of file Theme.c.

                                  {
 
  Theme *this = (Theme *) self;
 
  release(this->fontCache);
  release(this->imageCache);
  release(this->icons);
  release(this->stylesheets);
 
  super(Object, self, dealloc);
}

font()

static Font * font ( Theme *  self, const FontAttributes *  attributes, float  pixelDensity  )

static

Definition at line 108 of file Theme.c.

                                                                                     {
 
  String *key = cacheKey(attributes, pixelDensity);
 
  Font *font = $(self->fontCache, objectForKeyPath, key->chars);
  if (font == NULL) {
 
    Font *resolved = $$(Font, fontWithAttributes, attributes, pixelDensity);
    assert(resolved);
 
    // Keyed by the resolved Font's own name: when the requested family is not registered,
    // Font::fontWithAttributes falls back to the default Font, and caching that under the
    // requested key would pin the wrong Font to it permanently. This way the request
    // simply misses again, and heals once the family is registered via Font::cacheFont.
    const FontAttributes resolvedAttributes = { resolved->family, resolved->size, resolved->style };
    String *resolvedKey = cacheKey(&resolvedAttributes, pixelDensity);
 
    font = $(self->fontCache, objectForKeyPath, resolvedKey->chars);
    if (font == NULL) {
      $(self->fontCache, setObjectForKeyPath, resolved, resolvedKey->chars);
      font = resolved;
    }
 
    release(resolvedKey);
    release(resolved);
  }
 
  release(key);
 
  return font;
}

icon()

static AtlasImage * icon ( Theme *  self, const char *  name  )

static

Definition at line 175 of file Theme.c.

                                                       {
  return $($(self, icons), imageWithName, name);
}

icons()

static ImageAtlas * icons ( Theme *  self )

static

Definition at line 144 of file Theme.c.

                                      {
 
  if (self->icons == NULL) {
    self->icons = $(alloc(ImageAtlas), init);
    assert(self->icons);
  }
 
  return self->icons;
}

image()

static Image * image ( Theme *  self, const char *  name, float  pixelDensity  )

static

Definition at line 82 of file Theme.c.

                                                                       {
 
  assert(name);
 
  String *key = str("%s@%g", name, pixelDensity);
  assert(key);
 
  Image *image = $(self->imageCache, objectForKeyPath, key->chars);
  if (image == NULL) {
 
    image = $$(Image, imageWithResourceName, name, pixelDensity);
    if (image) {
      $(self->imageCache, setObjectForKeyPath, image, key->chars);
      release(image);
    }
  }
 
  release(key);
 
  return image;
}

init()

static Theme * init ( Theme *  self )

static

Definition at line 237 of file Theme.c.

                                {
 
  self = (Theme *) super(Object, self, init);
  if (self) {
 
    self->fontCache = $$(Dictionary, dictionary);
    assert(self->fontCache);
 
    self->imageCache = $$(Dictionary, dictionary);
    assert(self->imageCache);
 
    self->stylesheets = $$(Array, arrayWithCapacity, 8);
    assert(self->stylesheets);
 
    $(self, addStylesheet, $$(Stylesheet, defaultStylesheet));
  }
 
  return self;
}

initialize()

static void initialize ( Class *  clazz )

static

See also

Class::initialize(Class *)

Definition at line 312 of file Theme.c.

                                     {
 
  ((ObjectInterface *) clazz->interface)->dealloc = dealloc;
 
  ((ThemeInterface *) clazz->interface)->addIcon = addIcon;
  ((ThemeInterface *) clazz->interface)->addStylesheet = addStylesheet;
  ((ThemeInterface *) clazz->interface)->computeStyle = computeStyle;
  ((ThemeInterface *) clazz->interface)->font = font;
  ((ThemeInterface *) clazz->interface)->image = image;
  ((ThemeInterface *) clazz->interface)->icon = icon;
  ((ThemeInterface *) clazz->interface)->icons = icons;
  ((ThemeInterface *) clazz->interface)->init = init;
  ((ThemeInterface *) clazz->interface)->removeStylesheet = removeStylesheet;
  ((ThemeInterface *) clazz->interface)->renderDeviceDidReset = renderDeviceDidReset;
  ((ThemeInterface *) clazz->interface)->renderDeviceWillReset = renderDeviceWillReset;
  ((ThemeInterface *) clazz->interface)->theme = theme;
}

removeStylesheet()

static void removeStylesheet ( Theme *  self, Stylesheet *  stylesheet  )

static

Definition at line 261 of file Theme.c.

                                                                  {
  $((Array *) self->stylesheets, removeObject, stylesheet);
}

renderDeviceDidReset()

static void renderDeviceDidReset ( Theme *  self )

static

Definition at line 287 of file Theme.c.

                                              {
  // Bitmap Textures are recreated lazily by ImageAtlas::texture on next use.
}

renderDeviceWillReset()

static void renderDeviceWillReset ( Theme *  self )

static

Definition at line 276 of file Theme.c.

                                               {
  $(self->fontCache, enumerateObjectsAndKeys, renderDeviceWillReset_enumerate, NULL);
  if (self->icons) {
    $(self->icons, renderDeviceWillReset);
  }
}

renderDeviceWillReset_enumerate()

static void renderDeviceWillReset_enumerate ( const Dictionary *  dictionary, ident  obj, ident  key, ident  data  )

static

DictionaryEnumerator for renderDeviceWillReset.

Definition at line 268 of file Theme.c.

                                                                                                            {
  $((Font *) obj, renderDeviceWillReset);
}

theme()

static Theme * theme ( SDL_Window *  window )

static

Definition at line 295 of file Theme.c.

                                        {
 
  assert(window);
 
  WindowController *windowController = $$(WindowController, windowController, window);
  if (windowController) {
    return windowController->theme;
  }
 
  return NULL;
}