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Add proper text rendering

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This commit is contained in:
zvon 2020-08-23 09:47:31 +02:00
parent cf8ec294d1
commit 05ac3cb90a
1 changed files with 77 additions and 0 deletions
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77
sdlpp.hpp
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@ -13,6 +13,12 @@
#include <unordered_set>
#include <vector>
#define SDLPP_TEXT_LEFT 0x0001
#define SDLPP_TEXT_RIGHT 0x0002
#define SDLPP_TEXT_CENTER 0x0004
#define SDLPP_TEXT_TOP 0x0008
#define SDLPP_TEXT_BOTTOM 0x0010
namespace SDLPP {
int hex2num(char c);
@ -813,6 +819,77 @@ protected:
SDL_Rect rect;
};
class TextRenderer : public RectangleRender {
public:
TextRenderer() = delete;
TextRenderer( double x, double y, double w, double h, std::shared_ptr<Renderer> &r ) : RectangleRender(x, y, w, h, r) {}
TextRenderer( double x, double y, double w, double h, std::shared_ptr<Renderer> &r, Font &font, const std::string &text, const std::string &color = "FFFFFF", const std::string &outline_color = "000000", int outline_size = -1, int flags = SDLPP_TEXT_CENTER ) : RectangleRender(x, y, w, h, r) {
position_flags = flags;
setText(font, text, color, outline_color, outline_size);
}
void setText(Font &font, const std::string &text, const std::string &color = "FFFFFF", const std::string &outline_color = "000000", int outline_size = -1) {
setTexture(font, text, color, outline_color, outline_size);
updateDstRect();
}
void setFlags(int flags) {
position_flags = flags;
updateDstRect();
}
virtual void render() override {
if(!getHidden()) {
if(polygon)
polygon->render(*renderer);
if(texture != NULL)
SDL_RenderCopy(renderer->getRendererPtr(), texture->getTexturePtr(), NULL, &dst_rect);
}
if(hasCollisions() && renderer->getRenderColiders() && !getHidden()) {
for(const auto &col : getCollisions())
col->render(*renderer, colider_color);
}
}
virtual void updateSizeAndPosition() override {
RectangleRender::updateSizeAndPosition();
updateDstRect();
}
private:
void updateDstRect() {
if(!texture)
return;
int text_width{}, text_height{};
SDL_QueryTexture(texture->getTexturePtr(), NULL, NULL, &text_width, &text_height);
if(text_width < rect.w && text_height < rect.h) {
dst_rect.w = text_width;
dst_rect.h = text_height;
} else {
double x_div = static_cast<double>(text_width)/static_cast<double>(rect.w);
double y_div = static_cast<double>(text_height)/static_cast<double>(rect.h);
if(x_div > y_div) {
dst_rect.w = text_width / x_div;
dst_rect.h = text_height / x_div;
} else {
dst_rect.w = text_width / y_div;
dst_rect.h = text_height / y_div;
}
}
if(!(position_flags & SDLPP_TEXT_LEFT || position_flags & SDLPP_TEXT_RIGHT)) {
dst_rect.x = rect.x + (rect.w - dst_rect.w)/2;
} else if(position_flags & SDLPP_TEXT_LEFT) {
dst_rect.x = rect.x;
} else if(position_flags & SDLPP_TEXT_RIGHT) {
dst_rect.x = rect.x + rect.w - dst_rect.w;
}
if(!(position_flags & SDLPP_TEXT_TOP || position_flags & SDLPP_TEXT_BOTTOM)) {
dst_rect.y = rect.y + (rect.h - dst_rect.h)/2;
} else if(position_flags & SDLPP_TEXT_TOP) {
dst_rect.y = rect.y;
} else if(position_flags & SDLPP_TEXT_BOTTOM) {
dst_rect.y = rect.y + rect.h - dst_rect.h;
}
}
int position_flags = 0;
SDL_Rect dst_rect{};
};
class CircleRender : public RenderObject {
public:
CircleRender() = delete;