package net.machinemuse.general.gui.frame;
import net.machinemuse.numina.general.MuseMathUtils;
import net.machinemuse.numina.geometry.Colour;
import net.machinemuse.numina.geometry.DrawableMuseRect;
import net.machinemuse.numina.geometry.MusePoint2D;
import net.machinemuse.numina.render.RenderState;
import org.lwjgl.input.Mouse;
import org.lwjgl.opengl.GL11;
import java.util.List;
public class ScrollableFrame implements IGuiFrame {
protected int totalsize;
protected int currentscrollpixels;
protected int buttonsize = 5;
protected boolean scrollbarPicked = false;
protected boolean scrolldownPicked = false;
protected boolean scrollupPicked = false;
protected int lastdWheel = Mouse.getDWheel();
protected DrawableMuseRect border;
public ScrollableFrame(MusePoint2D topleft, MusePoint2D bottomright,
Colour borderColour, Colour insideColour) {
border = new DrawableMuseRect(topleft, bottomright, borderColour, insideColour);
}
protected double getScrollAmount() {
return 8;
}
@Override
public void update(double x, double y) {
if (border.containsPoint(x, y)) {
int dscroll = (lastdWheel - Mouse.getDWheel()) / 15;
lastdWheel = Mouse.getDWheel();
currentscrollpixels = (int) MuseMathUtils.clampDouble(currentscrollpixels + dscroll, 0, getMaxScrollPixels());
if (Mouse.isButtonDown(0)) {
if ((y - border.top()) < buttonsize && currentscrollpixels > 0) {
dscroll -= getScrollAmount();
} else if ((border.bottom() - y) < buttonsize) {
dscroll += getScrollAmount();
}
}
}
}
public void preDraw() {
border.draw();
RenderState.glowOn();
RenderState.texturelessOn();
GL11.glBegin(GL11.GL_TRIANGLES);
Colour.LIGHTBLUE.doGL();
// Can scroll down
if (currentscrollpixels + border.height() < totalsize) {
GL11.glVertex3d(border.left() + border.width() / 2, border.bottom(), 1);
GL11.glVertex3d(border.left() + border.width() / 2 + 2, border.bottom() - 4, 1);
GL11.glVertex3d(border.left() + border.width() / 2 - 2, border.bottom() - 4, 1);
}
// Can scroll up
if (currentscrollpixels > 0) {
GL11.glVertex3d(border.left() + border.width() / 2, border.top(), 1);
GL11.glVertex3d(border.left() + border.width() / 2 - 2, border.top() + 4, 1);
GL11.glVertex3d(border.left() + border.width() / 2 + 2, border.top() + 4, 1);
}
Colour.WHITE.doGL();
GL11.glEnd();
RenderState.texturelessOff();
RenderState.scissorsOn(border.left() + 4, border.top() + 4, border.width() - 8, border.height() - 8);
}
public void postDraw() {
RenderState.scissorsOff();
RenderState.glowOff();
}
@Override
public void draw() {
preDraw();
postDraw();
}
@Override
public void onMouseDown(double x, double y, int button) {
}
@Override
public void onMouseUp(double x, double y, int button) {
}
public int getMaxScrollPixels() {
return (int) Math.max(totalsize - border.height(), 0);
}
@Override
public List<String> getToolTip(int x, int y) {
// TODO Auto-generated method stub
return null;
}
}