ImGui debugger: Add TTF font support

UI/EmuScreen.cpp

@@ -27,7 +27,7 @@ using namespace std::placeholders;
 #include "Common/Render/Text/draw_text.h"
 #include "Common/File/FileUtil.h"
 #include "Common/Battery/Battery.h"
-
+#include "Common/File/VFS/VFS.h"
 #include "Common/UI/Root.h"
 #include "Common/UI/UI.h"
 #include "Common/UI/Context.h"
@@ -1646,7 +1646,13 @@ void EmuScreen::renderImDebugger() {
 		if (!imguiInited_) {
 			imguiInited_ = true;
 			imDebugger_ = std::make_unique<ImDebugger>();
-			ImGui_ImplThin3d_Init(draw);
+
+			// Read the TTF font
+			size_t size = 0;
+			uint8_t *fontData = g_VFS.ReadFile("Roboto-Condensed.ttf", &size);
+			// This call works even if fontData is nullptr, in which case the font just won't get loaded.
+			// This takes ownership of the font array.
+			ImGui_ImplThin3d_Init(draw, fontData, size);
 		}
 
 		if (PSP_IsInited()) {

UI/ImDebugger/ImDebugger.cpp

@@ -368,10 +368,6 @@ void ImDebugger::Frame(MIPSDebugInterface *mipsDebug, GPUDebugInterface *gpuDebu
 					Core_Break("Menu:Break");
 				}
 			}
-			ImGui::Separator();
-			if (ImGui::MenuItem("Toggle Breakpoint")) {
-				// TODO
-			}
 			ImGui::EndMenu();
 		}
 		if (ImGui::BeginMenu("CPU")) {
@@ -399,7 +395,8 @@ void ImDebugger::Frame(MIPSDebugInterface *mipsDebug, GPUDebugInterface *gpuDebu
 			if (ImGui::MenuItem("Close Debugger")) {
 				g_Config.bShowImDebugger = false;
 			}
-			ImGui::MenuItem("Dear ImGUI Demo", nullptr, &cfg_.demoOpen);
+			ImGui::MenuItem("Dear ImGui Demo", nullptr, &cfg_.demoOpen);
+			ImGui::MenuItem("Dear ImGui Style editor", nullptr, &cfg_.styleEditorOpen);
 			ImGui::EndMenu();
 		}
 		ImGui::EndMainMenuBar();
@@ -409,6 +406,10 @@ void ImDebugger::Frame(MIPSDebugInterface *mipsDebug, GPUDebugInterface *gpuDebu
 		ImGui::ShowDemoWindow(&cfg_.demoOpen);
 	}
 
+	if (cfg_.styleEditorOpen) {
+		ImGui::ShowStyleEditor();
+	}
+
 	if (cfg_.disasmOpen) {
 		disasm_.Draw(mipsDebug, &cfg_.disasmOpen, coreState);
 	}

UI/ImDebugger/ImDebugger.h

@@ -65,6 +65,7 @@ struct ImConfig {
 	bool atracOpen = true;
 	bool structViewerOpen = false;
 	bool framebuffersOpen = false;
+	bool styleEditorOpen = false;
 
 	// HLE explorer settings
 	// bool filterByUsed = true;

UI/ImDebugger/ImDisasmView.cpp

@@ -1,5 +1,6 @@
 
 #include "ext/imgui/imgui_internal.h"
+#include "ext/imgui/imgui_impl_thin3d.h"
 
 #include "Common/StringUtils.h"
 #include "Common/Log.h"
@@ -178,8 +179,7 @@ void ImDisasmView::drawBranchLine(ImDrawList *drawList, Rect rect, std::map<u32,
 		bottomY = (float)addressPositions[line.second] + rowHeight_ / 2;
 	}
 
-	if ((topY < 0 && bottomY < 0) || (topY > rect.bottom && bottomY > rect.bottom))
-	{
+	if ((topY < 0 && bottomY < 0) || (topY > rect.bottom && bottomY > rect.bottom)) {
 		return;
 	}
 
@@ -316,6 +316,8 @@ void ImDisasmView::drawArguments(ImDrawList *drawList, Rect rc, const Disassembl
 
 void ImDisasmView::Draw(ImDrawList *drawList) {
 	// TODO: Don't need to do these every frame.
+	ImGui_PushFixedFont();
+
 	rowHeight_ = ImGui::GetTextLineHeightWithSpacing();
 	charWidth_ = ImGui::CalcTextSize("W", nullptr, false, -1.0f).x;
 
@@ -435,17 +437,17 @@ void ImDisasmView::Draw(ImDrawList *drawList) {
 	ImGuiIO& io = ImGui::GetIO();
 	ImVec2 mousePos = ImVec2(io.MousePos.x - canvas_p0.x, io.MousePos.y - canvas_p0.y);
 	if (is_hovered && ImGui::IsMouseClicked(ImGuiMouseButton_Left)) {
-		INFO_LOG(Log::CPU, "Mousedown %f,%f active:%d hover:%d", mousePos.x, mousePos.y, is_active, is_hovered);
+		// INFO_LOG(Log::CPU, "Mousedown %f,%f active:%d hover:%d", mousePos.x, mousePos.y, is_active, is_hovered);
 		onMouseDown(mousePos.x, mousePos.y, 1);
 	}
 	if (ImGui::IsMouseReleased(ImGuiMouseButton_Left)) {
-		INFO_LOG(Log::CPU, "Mouseup %f,%f active:%d hover:%d", mousePos.x, mousePos.y, is_active, is_hovered);
+		// INFO_LOG(Log::CPU, "Mouseup %f,%f active:%d hover:%d", mousePos.x, mousePos.y, is_active, is_hovered);
 		if (is_hovered) {
 			onMouseUp(mousePos.x, mousePos.y, 1);
 		}
 	}
 	if (ImGui::IsMouseDragging(ImGuiMouseButton_Left)) {
-		INFO_LOG(Log::CPU, "Mousedrag %f,%f active:%d hover:%d", mousePos.x, mousePos.y, is_active, is_hovered);
+		// INFO_LOG(Log::CPU, "Mousedrag %f,%f active:%d hover:%d", mousePos.x, mousePos.y, is_active, is_hovered);
 		if (is_hovered) {
 			onMouseMove(mousePos.x, mousePos.y, 1);
 		}
@@ -482,10 +484,13 @@ void ImDisasmView::Draw(ImDrawList *drawList) {
 		}
 	}
 
+	ImGui_PopFont();
+
 	ImGui::OpenPopupOnItemClick("context", ImGuiPopupFlags_MouseButtonRight);
 	PopupMenu();
 
 	drawList->PopClipRect();
+
 }
 
 void ImDisasmView::ScrollRelative(int amount) {
@@ -528,7 +533,7 @@ void ImDisasmView::onChar(int c) {
 }
 
 
-void ImDisasmView::editBreakpoint() {
+void ImDisasmView::editBreakpoint(ImConfig &cfg) {
 	/*
 	BreakpointWindow win(wnd, debugger);
 
@@ -583,7 +588,7 @@ void ImDisasmView::ProcessKeyboardShortcuts() {
 			// gotoAddr(addr);
 		}
 		if (ImGui::IsKeyPressed(ImGuiKey_E)) {
-			editBreakpoint();
+			// editBreakpoint();
 		}
 		if (ImGui::IsKeyPressed(ImGuiKey_D)) {
 			toggleBreakpoint(true);

UI/ImDebugger/ImDisasmView.h

@@ -11,6 +11,8 @@
 #include "Core/Debugger/DisassemblyManager.h"
 #include "Core/Debugger/DebugInterface.h"
 
+struct ImConfig;
+
 // Corresponds to CtrlDisAsmView
 // TODO: Fold out common code.
 class ImDisasmView {
@@ -77,7 +79,7 @@ class ImDisasmView {
 		showHex_ = s;
 	}
 	void toggleBreakpoint(bool toggleEnabled = false);
-	void editBreakpoint();
+	void editBreakpoint(ImConfig &cfg);
 
 	void setCurAddress(u32 newAddress, bool extend = false) {
 		newAddress = manager.getStartAddress(newAddress);

ext/imgui/imgui_impl_thin3d.cpp

@@ -7,7 +7,10 @@
 #include "Common/System/Display.h"
 #include "Common/Math/lin/matrix4x4.h"
 
-Lin::Matrix4x4 g_drawMatrix;
+static Lin::Matrix4x4 g_drawMatrix;
+
+static ImFont *g_proportionalFont = nullptr;
+static ImFont *g_fixedFont = nullptr;
 
 struct ImGui_ImplThin3d_Data {
 	Draw::SamplerState *fontSampler = nullptr;
@@ -217,8 +220,18 @@ void ImGui_ImplThin3d_DestroyDeviceObjects() {
 	}
 }
 
-bool ImGui_ImplThin3d_Init(Draw::DrawContext *draw) {
+bool ImGui_ImplThin3d_Init(Draw::DrawContext *draw, const uint8_t *ttf_font, size_t size) {
 	ImGuiIO& io = ImGui::GetIO();
+	if (ttf_font) {
+		g_proportionalFont = io.Fonts->AddFontFromMemoryTTF((void *)ttf_font, (int)size, 21.0f / g_display.dpi_scale_x, nullptr, io.Fonts->GetGlyphRangesDefault());
+	} else {
+		// fallback
+		g_proportionalFont = g_fixedFont;
+	}
+	g_fixedFont = io.Fonts->AddFontDefault();
+	ImGui::GetStyle().ScaleAllSizes(1.0f / g_display.dpi_scale_x);
+	ImGui::GetStyle().Colors[ImGuiCol_Border] = ImColor(IM_COL32(0x2A, 0x2F, 0x3B, 0xFF));
+
 	IMGUI_CHECKVERSION();
 	IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
 
@@ -231,6 +244,14 @@ bool ImGui_ImplThin3d_Init(Draw::DrawContext *draw) {
 	return true;
 }
 
+void ImGui_PushFixedFont() {
+	ImGui::PushFont(g_fixedFont);
+}
+
+void ImGui_PopFont() {
+	ImGui::PopFont();
+}
+
 void ImGui_ImplThin3d_Shutdown() {
 	ImGui_ImplThin3d_Data* bd = ImGui_ImplThin3d_GetBackendData();
 	IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");

ext/imgui/imgui_impl_thin3d.h

@@ -33,8 +33,8 @@
 #include "Common/GPU/thin3d.h"
 #include "Common/Math/lin/matrix4x4.h"
 
-// Called by user code
-IMGUI_IMPL_API bool         ImGui_ImplThin3d_Init(Draw::DrawContext *draw);
+// Called by user code. Takes ownership of the font buffer and later deletes it.
+IMGUI_IMPL_API bool         ImGui_ImplThin3d_Init(Draw::DrawContext *draw, const uint8_t *ttf_font, size_t size);
 IMGUI_IMPL_API void         ImGui_ImplThin3d_Shutdown();
 IMGUI_IMPL_API void         ImGui_ImplThin3d_NewFrame(Draw::DrawContext *draw, Lin::Matrix4x4 drawMatrix);
 IMGUI_IMPL_API void         ImGui_ImplThin3d_RenderDrawData(ImDrawData* draw_data, Draw::DrawContext *draw);
@@ -44,6 +44,9 @@ IMGUI_IMPL_API void         ImGui_ImplThin3d_DestroyDeviceObjects();
 IMGUI_IMPL_API ImTextureID ImGui_ImplThin3d_AddTexture(Draw::Texture *texture);
 IMGUI_IMPL_API Draw::Texture *ImGui_ImplThin3d_RemoveTexture(ImTextureID texture);
 
+void ImGui_PushFixedFont();
+void ImGui_PopFont();
+
 // Helper structure to hold the data needed by one rendering context into one OS window
 // (Used by example's main.cpp. Used by multi-viewport features. Probably NOT used by your own engine/app.)
 struct ImGui_ImplThin3dH_Window