85 lines
2.0 KiB
C++
85 lines
2.0 KiB
C++
#include "WidgetImage.h"
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#include <SDL2/SDL_image.h>
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using std::string;
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WidgetImage::WidgetImage(int x, int y, int width, int height, string filename,
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ImageResize resize_type, HorizontalAlign halign, VerticalAlign valign,
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SDL_Color bg_color)
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: Widget(x, y, width, height),
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m_filename(filename),
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m_image_surface(nullptr),
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m_resize_type(resize_type),
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m_halign(halign),
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m_valign(valign),
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m_bg_color(bg_color)
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{
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m_image_surface = IMG_Load(m_filename.c_str());
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if (nullptr == m_image_surface)
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{
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// TODO: Print errors
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}
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}
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void WidgetImage::draw()
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{
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if (nullptr == m_surface)
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{
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return;
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}
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// Clear surface with BG color
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SDL_FillRect(m_surface, nullptr,
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SDL_MapRGBA(m_surface->format, m_bg_color.r, m_bg_color.g, m_bg_color.b, m_bg_color.a));
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if (nullptr == m_image_surface)
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{
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return;
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}
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SDL_Rect align = surface_align(m_surface, m_image_surface, m_halign, m_valign);
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switch (m_resize_type)
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{
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case RESIZE_NONE:
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SDL_BlitSurface(m_image_surface, nullptr, m_surface, &align);
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break;
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case RESIZE_FIT:
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// TODO: This currently stretches
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SDL_BlitScaled(m_image_surface, nullptr, m_surface, nullptr);
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break;
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case RESIZE_STRETCH:
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SDL_BlitScaled(m_image_surface, nullptr, m_surface, nullptr);
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break;
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}
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}
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std::unique_ptr<Widget> WidgetImage::builder(const nlohmann::json& j)
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{
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int x = 0;
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int y = 0;
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int width = 0;
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int height = 0;
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string filename;
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ImageResize resize_type = RESIZE_FIT;
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HorizontalAlign halign = HALIGN_CENTER;
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VerticalAlign valign = VALIGN_CENTER;
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SDL_Color bg_color = {.r = 255, .g = 255, .b = 255, .a = SDL_ALPHA_TRANSPARENT};
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json_extract(j, "x", x);
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json_extract(j, "y", y);
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json_extract(j, "width", width);
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json_extract(j, "height", height);
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json_extract(j, "filename", filename);
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json_extract(j, "resize_type", resize_type);
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json_extract(j, "halign", halign);
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json_extract(j, "valign", valign);
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json_extract(j, "bg_color", bg_color);
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return std::make_unique<WidgetImage>(x, y, width, height, filename,
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resize_type, halign, valign, bg_color);
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}
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