Initial commit

backends/imgui/imgui_utils.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "backends/imgui/imgui_utils.h"
+
+namespace ImGuiEx {
+
+void Boolean(bool val) {
+	if (val) {
+		ImGui::Text(ICON_MS_CHECK_BOX);
+	} else {
+		ImGui::Text(ICON_MS_CHECK_BOX_OUTLINE_BLANK);
+	}
+}
+
+void Palette(const Graphics::Palette &palette) {
+	ImDrawList *drawList = ImGui::GetWindowDrawList();
+	const ImDrawListFlags backupFlags = drawList->Flags;
+	drawList->Flags &= ~ImDrawListFlags_AntiAliasedLines;
+	const ImVec2 &pos = ImGui::GetCursorScreenPos();
+	for (uint palettePanelIdx = 0; palettePanelIdx < palette.size(); ++palettePanelIdx) {
+		uint8 r, g, b;
+		palette.get(palettePanelIdx, r, g, b);
+		const float borderWidth = 1.0f;
+		const ImVec2 availableInner = ImGui::GetContentRegionAvail();
+		const float contentRegionWidth = availableInner.x + ImGui::GetCursorPosX();
+		const ImVec2 colorButtonSize(ImGui::GetFrameHeight(), ImGui::GetFrameHeight());
+		ImVec2 globalCursorPos = ImGui::GetCursorScreenPos();
+		const ImVec2 &windowPos = ImGui::GetWindowPos();
+		const ImVec2 v1(globalCursorPos.x + borderWidth, globalCursorPos.y + borderWidth);
+		const ImVec2 v2(globalCursorPos.x + colorButtonSize.x, globalCursorPos.y + colorButtonSize.y);
+		drawList->AddRectFilled(v1, v2, IM_COL32(r, g, b, 255));
+
+		ImGui::PushID((int)palettePanelIdx);
+		if (ImGui::InvisibleButton("", colorButtonSize)) {
+		}
+		ImGui::SetItemTooltip("Index: %i, R(%d), G(%d), B(%d)", (int)palettePanelIdx, (int)r, (int)g, (int)b);
+		ImGui::PopID();
+
+		globalCursorPos.x += colorButtonSize.x;
+		if (globalCursorPos.x > windowPos.x + contentRegionWidth - colorButtonSize.x) {
+			globalCursorPos.x = pos.x;
+			globalCursorPos.y += colorButtonSize.y;
+		}
+		ImGui::SetCursorScreenPos(globalCursorPos);
+	}
+	// restore the draw list flags from above
+	drawList->Flags = backupFlags;
+}
+
+bool toggleButton(const char *label, bool *p_value, bool inverse) {
+	int pop = 0;
+	if (*p_value != inverse) {
+		ImVec4 hovered = ImGui::GetStyle().Colors[ImGuiCol_ButtonHovered];
+		ImGui::PushStyleColor(ImGuiCol_Button, hovered);
+		pop = 1;
+	}
+	bool result = ImGui::Button(label);
+	if (result) {
+		*p_value = !*p_value;
+	}
+	ImGui::PopStyleColor(pop);
+	return result;
+}
+
+} // namespace ImGuiEx