@Override
public void render(MVP mvp) {
final float contentSize = 0.9f;
SimpleTexturedShader shader = injector.getInstance(SimpleTexturedShader.class);
shader.activate();
// Draw the background texture
shader.setMVPMatrix(mvp.collapse());
shader.setTexture(backgroundTexture);
shader.draw();
// If the click action has an icon
if (action.hasIconTexture()) {
drawIcon(mvp, shader);
}
drawActionName(mvp, contentSize);
// If the action cannot be performed
if (!action.isExecutable()) {
// Draw the unavailable overlay
shader.setMVPMatrix(mvp.collapse());
shader.setTexture(unselectableTexture);
shader.draw();
}
}
private void drawActionName(final MVP mvp, final float contentSize) {
final float[] nameModel = mvp.peekCopy(MVP.Type.MODEL);
// Move to the left edge of the menu item
Matrix.translateM(nameModel, Constants.NO_OFFSET, -0.45f, 0.0f, 0.0f);
// Shrink the content text to the correct size
float nameWidth = (1.0f / aspectRatio);
Matrix.scaleM(nameModel, Constants.NO_OFFSET, nameWidth, 1.0f, 1.0f);
// Align the left edge of the text with the left edge of the menu item
Matrix.translateM(nameModel, Constants.NO_OFFSET, text.getWidth() / 2.0f, 0.0f, 0.0f);
// Perform the text draw
mvp.push(MVP.Type.MODEL, nameModel);
text.render(mvp);
mvp.pop(MVP.Type.MODEL);
}
private void drawIcon(final MVP mvp, final SimpleTexturedShader shader) {
final Device device = injector.getInstance(Device.class);
final float[] iconModel = mvp.peekCopy(MVP.Type.MODEL);
// Move to the right edge of the entire menu item
Matrix.translateM(iconModel, Constants.NO_OFFSET, 0.5f, 0.0f, 0.0f);
// Scale the icon to be 1:1 square to the menu item height
Matrix.scaleM(
iconModel, Constants.NO_OFFSET, 1.0f / aspectRatio / device.getAspectRatio(), 1.0f, 1.0f);
// Align the right edge of the icon to the right edge of the menu item
Matrix.translateM(iconModel, Constants.NO_OFFSET, -0.5f, 0.0f, 0.0f);
// Shrink the icon size down to fit in the margins
final float contentSize = 0.5f;
Matrix.scaleM(iconModel, Constants.NO_OFFSET, contentSize, contentSize, 1.0f);
// Perform the icon draw
shader.setMVPMatrix(mvp.collapseM(iconModel));
shader.setTexture(action.getIconTexture());
shader.draw();
}