added example usage for custom Fonts

FlorianMichael · May 8, 2023 · 55f4312 · 55f4312
1 parent 5220a1b
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Showing 3 changed files with 36 additions and 9 deletions.
diff --git a/README.md b/README.md
@@ -14,7 +14,8 @@ ImGuiImpl.draw(io -> {
     ImGui.showDemoWindow();
 });
 ```
-Keep in mind that ImGui needs to be initalized, so you must not remove the MinecraftClient mixin in the ImGui package
+Keep in mind that ImGui needs to be initialized, so you must not remove the MinecraftClient mixin in the ImGui package
+**The ImGuiImpl also contains a basic font loading base**
 
 ## License
 

diff --git a/src/main/java/de/florianmichael/imguiexample/imgui/ImGuiImpl.java b/src/main/java/de/florianmichael/imguiexample/imgui/ImGuiImpl.java
@@ -4,8 +4,7 @@
  */
 package de.florianmichael.imguiexample.imgui;
 
-import imgui.ImGui;
-import imgui.ImGuiIO;
+import imgui.*;
 import imgui.extension.implot.ImPlot;
 import imgui.flag.ImGuiConfigFlags;
 import imgui.gl3.ImGuiImplGl3;
@@ -23,17 +22,41 @@ public static void create(final long handle) {
         data.setIniFilename("modid.ini");
         data.setFontGlobalScale(1F);
 
-        imGuiImplGlfw.init(handle, true);
+        // If you want to have custom fonts, you can use the following code here
+
+//        {
+//            final ImFontAtlas fonts = data.getFonts();
+//            final ImFontGlyphRangesBuilder rangesBuilder = new ImFontGlyphRangesBuilder();
+//
+//            rangesBuilder.addRanges(data.getFonts().getGlyphRangesDefault());
+//            rangesBuilder.addRanges(data.getFonts().getGlyphRangesCyrillic());
+//            rangesBuilder.addRanges(data.getFonts().getGlyphRangesJapanese());
+//
+//            final short[] glyphRanges = rangesBuilder.buildRanges();
+//
+//            final ImFontConfig basicConfig = new ImFontConfig();
+//            basicConfig.setGlyphRanges(data.getFonts().getGlyphRangesCyrillic());
+//
+//            final List<ImFont> generatedFonts = new ArrayList<>();
+//            for (int i = 5 /* MINIMUM_FONT_SIZE */; i < 50 /* MAXIMUM_FONT_SIZE */; i++) {
+//                basicConfig.setName("<Font Name> " + i + "px");
+//                generatedFonts.add(fonts.addFontFromMemoryTTF(IOUtils.toByteArray(Objects.requireNonNull(ImGuiImpl.class.getResourceAsStream("<File Path>"))), i, basicConfig, glyphRanges));
+//            }
+//            fonts.build();
+//            basicConfig.destroy();
+//        }
 
-        data.setNavActive(false);
-        data.setNavVisible(false);
-        data.setKeyCtrl(false);
+        // The "generatedFonts" list now contains an ImFont for each scale from 5 to 50, you should save the font scales you want as global fields here to use them later:
+        // For example:
+        // defaultFont = generatedFonts.get(30); // Font scale is 30
+        // How you can apply the font then, you can see in ExampleMixin
 
-        data.setConfigFlags(ImGuiConfigFlags.NavNoCaptureKeyboard | ImGuiConfigFlags.DockingEnable);
+        imGuiImplGlfw.init(handle, true);
+
+        data.setConfigFlags(ImGuiConfigFlags.DockingEnable);
         imGuiImplGl3.init();
     }
 
-
     public static void draw(final RenderInterface runnable) {
         imGuiImplGlfw.newFrame(); // Handle keyboard and mouse interactions
         ImGui.newFrame();

diff --git a/src/main/java/de/florianmichael/imguiexample/mixin/ExampleMixin.java b/src/main/java/de/florianmichael/imguiexample/mixin/ExampleMixin.java
@@ -20,11 +20,14 @@ private void init(CallbackInfo info) {
 	@Inject(method = "render", at = @At("RETURN"))
 	private void render(MatrixStack matrices, int mouseX, int mouseY, float delta, CallbackInfo ci) {
 		ImGuiImpl.draw(io -> {
+			// Example on how to use a custom Font
+			// ImGui.pushFont(ImGuiImpl.defaultFont);
 			if (ImGui.begin("Hello World")) {
 				ImGui.end();
 			}
 
 			ImGui.showDemoWindow();
+			// ImGui.popFont();
 		});
 	}
 }