HueColorPicker.c

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/*
 * ObjectivelyMVC: Object oriented MVC framework for OpenGL, SDL2 and GNU C.
 * Copyright (C) 2014 Jay Dolan <jay@jaydolan.com>
 *
 * This software is provided 'as-is', without any express or implied
 * warranty. In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 * claim that you wrote the original software. If you use this software
 * in a product, an acknowledgment in the product documentation would be
 * appreciated but is not required.
 *
 * 2. Altered source versions must be plainly marked as such, and must not be
 * misrepresented as being the original software.
 *
 * 3. This notice may not be removed or altered from any source distribution.
 */
#include <assert.h>
 
#include "HueColorPicker.h"
 
#define _Class _HueColorPicker
 
#pragma mark - Actions & delegates
 
static void didSetHue(Slider *slider, double value) {
 
    HueColorPicker *this = (HueColorPicker *) slider->delegate.self;
 
    this->hue = value;
 
    $((View *) this, updateBindings);
 
    if (this->delegate.didPickColor) {
        this->delegate.didPickColor(this, this->hue, this->saturation, this->value);
    }
}
 
#pragma mark - Object
 
static void dealloc(Object *self) {
 
    HueColorPicker *this = (HueColorPicker *) self;
 
    release(this->colorView);
    release(this->hueInput);
    release(this->hueSlider);
    release(this->stackView);
 
    super(Object, self, dealloc);
}
 
#pragma mark - View
 
static void awakeWithDictionary(View *self, const Dictionary *dictionary) {
 
    super(View, self, awakeWithDictionary, dictionary);
 
    HueColorPicker *this = (HueColorPicker *) self;
 
    const Inlet inlets[] = MakeInlets(
        MakeInlet("colorView", InletTypeView, &this->colorView, NULL),
        MakeInlet("hue", InletTypeDouble, &this->hue, NULL),
        MakeInlet("saturation", InletTypeDouble, &this->saturation, NULL),
        MakeInlet("value", InletTypeDouble, &this->value, NULL),
        MakeInlet("hueInput", InletTypeView, &this->hueInput, NULL),
        MakeInlet("hueSlider", InletTypeView, &this->hueSlider, NULL),
        MakeInlet("stackView", InletTypeView, &this->stackView, NULL)
    );
    
    $(self, bind, inlets, dictionary);
}
 
static View *init(View *self) {
    return (View *) $((HueColorPicker *) self, initWithFrame, NULL);
}
 
static void updateBindings(View *self) {
 
    super(View, self, updateBindings);
 
    HueColorPicker *this = (HueColorPicker *) self;
 
    $(this->hueSlider, setValue, this->hue);
 
    this->colorView->backgroundColor = $(this, rgbColor);
}
 
#pragma mark - HueColorPicker
 
static HueColorPicker *initWithFrame(HueColorPicker *self, const SDL_Rect *frame) {
 
    self = (HueColorPicker *) super(Control, self, initWithFrame, frame);
    if (self) {
 
        self->stackView = $(alloc(StackView), initWithFrame, NULL);
        assert(self->stackView);
 
        $((View *) self, addSubview, (View *) self->stackView);
 
        self->colorView = $(alloc(View), initWithFrame, &MakeRect(0, 0, 0, 24));
        assert(self->colorView);
 
        $(self->colorView, addClassName, "colorView");
        $((View *) self->stackView, addSubview, self->colorView);
 
        self->hueSlider = $(alloc(Slider), initWithFrame, NULL);
        assert(self->hueSlider);
 
        self->hueSlider->delegate.self = self;
        self->hueSlider->delegate.didSetValue = didSetHue;
        self->hueSlider->max = 360.0;
        $(self->hueSlider, setLabelFormat, "%.0lf");
 
        self->hueInput = $(alloc(Input), initWithFrame, NULL);
        assert(self->hueInput);
 
        $(self->hueInput, setControl, (Control *) self->hueSlider);
        $(self->hueInput->label->text, setText, "H");
 
        $((View *) self->stackView, addSubview, (View *) self->hueInput);
 
        $(self, setColor, 0.0, 1.0, 1.0);
    }
 
    return self;
}
 
static SDL_Color rgbColor(const HueColorPicker *self) {
    return MVC_HSVToRGB(self->hue, self->saturation, self->value);
}
 
static void setColor(HueColorPicker *self, double hue, double saturation, double value) {
 
    self->hue = hue;
    self->saturation = saturation;
    self->value = value;
 
    $((View *) self, updateBindings);
}
 
static void setRGBColor(HueColorPicker *self, const SDL_Color *color) {
 
    MVC_RGBToHSV(color, &self->hue, &self->saturation, &self->value);
 
    $((View *) self, updateBindings);
}
 
#pragma mark - Class lifecycle
 
static void initialize(Class *clazz) {
 
    ((ObjectInterface *) clazz->interface)->dealloc = dealloc;
 
    ((ViewInterface *) clazz->interface)->awakeWithDictionary = awakeWithDictionary;
    ((ViewInterface *) clazz->interface)->init = init;
    ((ViewInterface *) clazz->interface)->updateBindings = updateBindings;
 
    ((HueColorPickerInterface *) clazz->interface)->initWithFrame = initWithFrame;
    ((HueColorPickerInterface *) clazz->interface)->rgbColor = rgbColor;
    ((HueColorPickerInterface *) clazz->interface)->setColor = setColor;
    ((HueColorPickerInterface *) clazz->interface)->setRGBColor = setRGBColor;
}
 
Class *_HueColorPicker(void) {
    static Class *clazz;
    static Once once;
 
    do_once(&once, {
        clazz = _initialize(&(const ClassDef) {
            .name = "HueColorPicker",
            .superclass = _Control(),
            .instanceSize = sizeof(HueColorPicker),
            .interfaceOffset = offsetof(HueColorPicker, interface),
            .interfaceSize = sizeof(HueColorPickerInterface),
            .initialize = initialize,
        });
    });
 
    return clazz;
}
 
#undef _Class