138 lines
3.5 KiB
C++
138 lines
3.5 KiB
C++
#include <SDL2/SDL_assert.h>
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#include <basic_widgets/core/math.hpp>
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#include <basic_widgets/core/texture.hpp>
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#include <basic_widgets/w/caption.hpp>
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#include <iostream>
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using namespace bwidgets;
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widget::Caption::~Caption() noexcept
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{
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core::OpaqueStruct<core::Texture>::discard(_text_texture);
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}
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widget::Caption* widget::Caption::color_bg(const SDL_Color& c)
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{
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_color_bg = c;
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core::OpaqueStruct<core::Texture>::discard(_text_texture);
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return this;
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}
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widget::Caption* widget::Caption::color_fg(const SDL_Color& c)
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{
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_color_fg = c;
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core::OpaqueStruct<core::Texture>::discard(_text_texture);
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return this;
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}
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widget::Caption* widget::Caption::render_mode(core::Font::RenderMode m) noexcept
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{
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_render_mode = m;
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core::OpaqueStruct<core::Texture>::discard(_text_texture);
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return this;
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}
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core::Size widget::Caption::size() const noexcept
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{
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if (_font == nullptr)
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return {-1, -1};
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core::Size size = _font->text_size(_text);
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return {size.w + 2 * margins.w, size.h + 2 * margins.h};
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}
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const std::string& widget::Caption::text() const noexcept
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{
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return _text;
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}
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widget::Caption* widget::Caption::text(const std::string& t)
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{
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_text = t;
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core::OpaqueStruct<core::Texture>::discard(_text_texture);
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return this;
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}
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void widget::Caption::_handle_font_change(core::Font*)
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{
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core::OpaqueStruct<core::Texture>::discard(_text_texture);
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}
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static inline bool operator!=(const SDL_Color& a, const SDL_Color& b)
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{
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return a.r != b.r || a.g != b.g || a.b != b.b || a.a != b.a;
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}
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void widget::Caption::_handle_font_color_change(const SDL_Color& fg, const SDL_Color& bg)
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{
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if (fg != _font_color_fg || (bg != _font_color_bg &&
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_font_render_mode == core::Font::RenderMode::SHADED))
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{
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core::OpaqueStruct<core::Texture>::discard(_text_texture);
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}
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}
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void widget::Caption::_handle_geometry_change(const SDL_Rect& vp) noexcept
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{
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if (vp.w != _viewport.w || vp.h != _viewport.h)
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{
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_widget_area = core::rect_margin({0, 0, vp.w, vp.h}, margins);
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}
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}
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void widget::Caption::_handle_renderer_change(core::Renderer*)
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{
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core::OpaqueStruct<core::Texture>::discard(_text_texture);
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}
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void widget::Caption::_handle_rendering()
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{
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_renderer->draw_color(_color_bg)->fill_rect({0, 0, _viewport.w, _viewport.h});
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if (!_text_texture)
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_handle_texture_update();
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core::Size size_dst {
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(int)((float)_text_texture->attributes().w
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/ _text_texture->attributes().h * _widget_area.h),
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_widget_area.h
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};
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SDL_Rect texture_dst {
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margins.w,
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margins.h,
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size_dst.w,
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size_dst.h
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};
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switch (alignment)
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{
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case Alignment::CENTER:
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texture_dst.x = core::center_rect(_widget_area.w, texture_dst.w)
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+ _widget_area.x;
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break;
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case Alignment::LEFT:
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break;
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case Alignment::RIGHT:
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texture_dst.x = _widget_area.w - texture_dst.w - margins.w + _widget_area.x;
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break;
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}
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_renderer->copy(_text_texture, NULL, texture_dst);
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}
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void widget::Caption::_handle_texture_update()
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{
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SDL_assert_release(_font);
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core::OpaqueStruct<core::Texture>::discard(_text_texture);
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SDL_Surface* s;
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switch (_render_mode)
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{
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case core::Font::RenderMode::SHADED:
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s = _font->render(_render_mode, _text, _color_fg, _color_bg);
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break;
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default:
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s = _font->render(_render_mode, _text, _color_fg);
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break;
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}
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_text_texture = new core::Texture(_renderer, s);
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}
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