feat: zoom possible, doit fix le scrollpane pour qu'il update ses scrollbars

This commit is contained in:
Emi Boucly 2025-03-17 14:36:49 +01:00
parent c47b49a616
commit b325204d7d
2 changed files with 59 additions and 2 deletions

View file

@ -9,10 +9,14 @@ import javafx.scene.canvas.Canvas;
import javafx.scene.control.Label;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.control.MenuItem;
import javafx.scene.control.ScrollPane;
import javafx.scene.control.Slider;
import javafx.scene.image.PixelReader;
import javafx.scene.image.PixelWriter;
import javafx.scene.image.WritableImage;
import javafx.scene.input.MouseEvent;
import javafx.scene.input.ScrollEvent;
import javafx.scene.input.ZoomEvent;
import javafx.scene.paint.Color;
import javafx.scene.paint.Paint;
import fr.emiko.graphicsElement.Stroke;
@ -27,6 +31,9 @@ public class HelloController implements Initializable {
public MenuItem saveButton;
public MenuItem loadButton;
public MenuItem newCanvasButton;
public Slider brushSizeSlider;
public Slider zoomSlider;
public ScrollPane scrollPane;
private double posX = 0;
private double posY = 0;
private Vector<Stroke> strokes = new Vector<>();
@ -39,8 +46,28 @@ public class HelloController implements Initializable {
saveButton.setOnAction(this::onActionSave);
loadButton.setOnAction(this::onActionLoad);
newCanvasButton.setOnAction(this::onActionCreateCanvas);
scrollPane.setOnScroll(this::onScrollZoom);
}
private void onScrollZoom(ScrollEvent event) {
event.consume();
double SCALE_DELTA = 1.1;
if (event.getDeltaY() == 0) {
return;
}
if (event.isControlDown()) {
double scaleFactor =
(event.getDeltaY() > 0) ? SCALE_DELTA : 1 / SCALE_DELTA;
drawingCanvas.setScaleX(drawingCanvas.getScaleX() * scaleFactor);
drawingCanvas.setScaleY(drawingCanvas.getScaleY() * scaleFactor);
scrollPane.setFitToHeight(true);
scrollPane.setFitToWidth(true);
}
}
private void onActionCreateCanvas(ActionEvent actionEvent) {
}

View file

@ -1,10 +1,12 @@
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.canvas.Canvas?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.Menu?>
<?import javafx.scene.control.MenuBar?>
<?import javafx.scene.control.MenuItem?>
<?import javafx.scene.control.ScrollPane?>
<?import javafx.scene.control.Slider?>
<?import javafx.scene.control.SplitPane?>
<?import javafx.scene.layout.ColumnConstraints?>
<?import javafx.scene.layout.GridPane?>
@ -35,7 +37,35 @@
</MenuBar>
<SplitPane dividerPositions="0.11195652173913044" VBox.vgrow="ALWAYS">
<items>
<VBox prefHeight="200.0" prefWidth="100.0" />
<VBox prefHeight="200.0" prefWidth="100.0">
<children>
<GridPane>
<columnConstraints>
<ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" />
</columnConstraints>
<rowConstraints>
<RowConstraints minHeight="10.0" vgrow="SOMETIMES" />
<RowConstraints minHeight="10.0" vgrow="SOMETIMES" />
</rowConstraints>
<children>
<Label text="Zoom" />
<Slider fx:id="zoomSlider" blockIncrement="0.1" max="5.0" min="1.0" showTickLabels="true" showTickMarks="true" snapToTicks="true" value="1.0" GridPane.rowIndex="1" />
</children>
</GridPane>
<GridPane>
<columnConstraints>
<ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" />
</columnConstraints>
<rowConstraints>
<RowConstraints minHeight="10.0" vgrow="SOMETIMES" />
<RowConstraints minHeight="10.0" vgrow="SOMETIMES" />
</rowConstraints>
<children>
<Label text="Brush size" />
<Slider fx:id="brushSizeSlider" GridPane.rowIndex="1" />
</children>
</GridPane>
</children></VBox>
<GridPane>
<columnConstraints>
<ColumnConstraints hgrow="ALWAYS" />
@ -46,7 +76,7 @@
<RowConstraints vgrow="SOMETIMES" />
</rowConstraints>
<children>
<ScrollPane hbarPolicy="ALWAYS" style="-fx-background-color: #666666; -fx-background: #666666;" vbarPolicy="ALWAYS" GridPane.hgrow="ALWAYS" GridPane.vgrow="ALWAYS">
<ScrollPane fx:id="scrollPane" hbarPolicy="ALWAYS" style="-fx-background-color: #666666; -fx-background: #666666;" vbarPolicy="ALWAYS" GridPane.hgrow="ALWAYS" GridPane.vgrow="ALWAYS">
<content>
<Canvas fx:id="drawingCanvas" height="600.0" nodeOrientation="INHERIT" width="800.0" />
</content>