ES-DE/es-core/src/components/NinePatchComponent.cpp

198 lines
5.4 KiB
C++

#include "components/NinePatchComponent.h"
#include "resources/TextureResource.h"
#include "Log.h"
#include "Renderer.h"
#include "ThemeData.h"
NinePatchComponent::NinePatchComponent(Window* window, const std::string& path, unsigned int edgeColor, unsigned int centerColor) : GuiComponent(window),
mCornerSize(16, 16),
mEdgeColor(edgeColor), mCenterColor(centerColor),
mPath(path),
mVertices(NULL), mColors(NULL)
{
if(!mPath.empty())
buildVertices();
}
NinePatchComponent::~NinePatchComponent()
{
if (mVertices != NULL)
delete[] mVertices;
if (mColors != NULL)
delete[] mColors;
}
void NinePatchComponent::updateColors()
{
Renderer::buildGLColorArray(mColors, mEdgeColor, 6 * 9);
Renderer::buildGLColorArray(&mColors[4 * 6 * 4], mCenterColor, 6);
}
void NinePatchComponent::buildVertices()
{
if(mVertices != NULL)
delete[] mVertices;
if(mColors != NULL)
delete[] mColors;
mTexture = TextureResource::get(mPath);
if(mTexture->getSize() == Vector2i::Zero())
{
mVertices = NULL;
mColors = NULL;
LOG(LogWarning) << "NinePatchComponent missing texture!";
return;
}
mVertices = new Vertex[6 * 9];
mColors = new GLubyte[6 * 9 * 4];
updateColors();
const Vector2f texSize = Vector2f((float)mTexture->getSize().x(), (float)mTexture->getSize().y());
float imgSizeX[3] = {mCornerSize.x(), mSize.x() - mCornerSize.x() * 2, mCornerSize.x()};
float imgSizeY[3] = {mCornerSize.y(), mSize.y() - mCornerSize.y() * 2, mCornerSize.y()};
float imgPosX[3] = {0, imgSizeX[0], imgSizeX[0] + imgSizeX[1]};
float imgPosY[3] = {0, imgSizeY[0], imgSizeY[0] + imgSizeY[1]};
//the "1 +" in posY and "-" in sizeY is to deal with texture coordinates having a bottom left corner origin vs. verticies having a top left origin
float texSizeX[3] = {mCornerSize.x() / texSize.x(), (texSize.x() - mCornerSize.x() * 2) / texSize.x(), mCornerSize.x() / texSize.x()};
float texSizeY[3] = {-mCornerSize.y() / texSize.y(), -(texSize.y() - mCornerSize.y() * 2) / texSize.y(), -mCornerSize.y() / texSize.y()};
float texPosX[3] = {0, texSizeX[0], texSizeX[0] + texSizeX[1]};
float texPosY[3] = {1, 1 + texSizeY[0], 1 + texSizeY[0] + texSizeY[1]};
int v = 0;
for(int slice = 0; slice < 9; slice++)
{
int sliceX = slice % 3;
int sliceY = slice / 3;
Vector2f imgPos = Vector2f(imgPosX[sliceX], imgPosY[sliceY]);
Vector2f imgSize = Vector2f(imgSizeX[sliceX], imgSizeY[sliceY]);
mVertices[v + 0].pos = imgPos;
mVertices[v + 1].pos = imgPos + Vector2f(0, imgSize.y());
mVertices[v + 2].pos = imgPos + Vector2f(imgSize.x(), 0);
mVertices[v + 3].pos = mVertices[v + 2].pos;
mVertices[v + 4].pos = mVertices[v + 1].pos;
mVertices[v + 5].pos = imgPos + imgSize;
Vector2f texPos = Vector2f(texPosX[sliceX], texPosY[sliceY]);
Vector2f texSize = Vector2f(texSizeX[sliceX], texSizeY[sliceY]);
mVertices[v + 0].tex = texPos;
mVertices[v + 1].tex = texPos + Vector2f(0, texSize.y());
mVertices[v + 2].tex = texPos + Vector2f(texSize.x(), 0);
mVertices[v + 3].tex = mVertices[v + 2].tex;
mVertices[v + 4].tex = mVertices[v + 1].tex;
mVertices[v + 5].tex = texPos + texSize;
v += 6;
}
// round vertices
for(int i = 0; i < 6*9; i++)
{
mVertices[i].pos.round();
}
}
void NinePatchComponent::render(const Transform4x4f& parentTrans)
{
Transform4x4f trans = parentTrans * getTransform();
trans.round();
if(mTexture && mVertices != NULL)
{
Renderer::setMatrix(trans);
mTexture->bind();
glEnable(GL_TEXTURE_2D);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glVertexPointer(2, GL_FLOAT, sizeof(Vertex), &mVertices[0].pos);
glTexCoordPointer(2, GL_FLOAT, sizeof(Vertex), &mVertices[0].tex);
glColorPointer(4, GL_UNSIGNED_BYTE, 0, mColors);
glDrawArrays(GL_TRIANGLES, 0, 6 * 9);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
glDisable(GL_TEXTURE_2D);
glDisable(GL_BLEND);
}
renderChildren(trans);
}
void NinePatchComponent::onSizeChanged()
{
buildVertices();
}
const Vector2f& NinePatchComponent::getCornerSize() const
{
return mCornerSize;
}
void NinePatchComponent::setCornerSize(int sizeX, int sizeY)
{
mCornerSize = Vector2f(sizeX, sizeY);
buildVertices();
}
void NinePatchComponent::fitTo(Vector2f size, Vector3f position, Vector2f padding)
{
size += padding;
position[0] -= padding.x() / 2;
position[1] -= padding.y() / 2;
setSize(size + mCornerSize * 2);
setPosition(position.x() + Math::lerp(-mCornerSize.x(), mCornerSize.x(), mOrigin.x()),
position.y() + Math::lerp(-mCornerSize.y(), mCornerSize.y(), mOrigin.y()));
}
void NinePatchComponent::setImagePath(const std::string& path)
{
mPath = path;
buildVertices();
}
void NinePatchComponent::setEdgeColor(unsigned int edgeColor)
{
mEdgeColor = edgeColor;
updateColors();
}
void NinePatchComponent::setCenterColor(unsigned int centerColor)
{
mCenterColor = centerColor;
updateColors();
}
void NinePatchComponent::applyTheme(const std::shared_ptr<ThemeData>& theme, const std::string& view, const std::string& element, unsigned int properties)
{
GuiComponent::applyTheme(theme, view, element, properties);
using namespace ThemeFlags;
const ThemeData::ThemeElement* elem = theme->getElement(view, element, "ninepatch");
if(!elem)
return;
if(properties & PATH && elem->has("path"))
setImagePath(elem->get<std::string>("path"));
}