imgui 背景图片 表格

#include "draw.hpp"
#include "utils.hpp"

#include "imgui/imgui.h"
#include "imgui/imgui_impl_dx9.h"
#include "imgui/imgui_impl_win32.h"

#define STB_IMAGE_IMPLEMENTATION
#include "stb/stb_image.h"

#include 
#pragma comment(lib,"d3d9.lib")

#include 

// 导入外部窗口过程函数
extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);

namespace u_draw
{
	LPDIRECT3D9 g_direct3d9 = nullptr;
	LPDIRECT3DDEVICE9 g_device9 = nullptr;
	D3DPRESENT_PARAMETERS g_present{ 0 };

	LPDIRECT3DTEXTURE9 g_background = nullptr;

	// 创建设备
	bool create_device(HWND h)
	{
		g_direct3d9 = Direct3DCreate9(D3D_SDK_VERSION);
		if (!g_direct3d9) return false;

		memset(&g_present, 0, sizeof(g_present));
		g_present.Windowed = TRUE;
		g_present.SwapEffect = D3DSWAPEFFECT_DISCARD;
		g_present.BackBufferFormat = D3DFMT_UNKNOWN;
		g_present.EnableAutoDepthStencil = TRUE;
		g_present.AutoDepthStencilFormat = D3DFMT_D16;
		g_present.PresentationInterval = D3DPRESENT_INTERVAL_ONE;
		if (g_direct3d9->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, h, D3DCREATE_HARDWARE_VERTEXPROCESSING, &g_present, &g_device9) < 0) return false;

		return true;
	}

	// 重置设备
	void reset_device()
	{
		if (g_device9)
		{
			ImGui_ImplDX9_InvalidateDeviceObjects();
			g_device9->Reset(&g_present);
			ImGui_ImplDX9_CreateDeviceObjects();
		}
	}

	// 设置主题风格
	void set_theme_style()
	{
		ImGuiStyle& style = ImGui::GetStyle();
		style.Colors[ImGuiCol_Text] = ImVec4(1.0f, 1.0f, 1.0f, 1.00f);
		style.Colors[ImGuiCol_WindowBg] = ImVec4(0.94f, 0.94f, 0.94f, 1.00f);
		style.Colors[ImGuiCol_MenuBarBg] = ImVec4(0.74f, 0.74f, 0.94f, 1.00f);
		style.Colors[ImGuiCol_Border] = ImVec4(0.50f, 0.50f, 0.50f, 0.60f);
		style.Colors[ImGuiCol_BorderShadow] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
		style.Colors[ImGuiCol_frameBg] = ImVec4(0.62f, 0.70f, 0.72f, 0.56f);
		style.Colors[ImGuiCol_frameBgHovered] = ImVec4(0.95f, 0.33f, 0.14f, 0.47f);
		style.Colors[ImGuiCol_frameBgActive] = ImVec4(0.97f, 0.31f, 0.13f, 0.81f);
		style.Colors[ImGuiCol_TitleBg] = ImVec4(0.42f, 0.75f, 1.00f, 0.53f);
		style.Colors[ImGuiCol_TitleBgCollapsed] = ImVec4(0.40f, 0.65f, 0.80f, 0.20f);
		style.Colors[ImGuiCol_ScrollbarBg] = ImVec4(0.40f, 0.62f, 0.80f, 0.15f);
		style.Colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.39f, 0.64f, 0.80f, 0.30f);
		style.Colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.28f, 0.67f, 0.80f, 0.59f);
		style.Colors[ImGuiCol_ScrollbarGrabActive] = ImVec4(0.25f, 0.48f, 0.53f, 0.67f);
		style.Colors[ImGuiCol_CheckMark] = ImVec4(0.48f, 0.47f, 0.47f, 0.71f);
		style.Colors[ImGuiCol_SliderGrabActive] = ImVec4(0.31f, 0.47f, 0.99f, 1.00f);
		style.Colors[ImGuiCol_Button] = ImVec4(1.00f, 0.79f, 0.18f, 0.78f);
		style.Colors[ImGuiCol_ButtonHovered] = ImVec4(0.42f, 0.82f, 1.00f, 0.81f);
		style.Colors[ImGuiCol_ButtonActive] = ImVec4(0.72f, 1.00f, 1.00f, 0.86f);
		style.Colors[ImGuiCol_Header] = ImVec4(0.65f, 0.78f, 0.84f, 0.80f);
		style.Colors[ImGuiCol_HeaderHovered] = ImVec4(0.75f, 0.88f, 0.94f, 0.80f);
		style.Colors[ImGuiCol_HeaderActive] = ImVec4(0.55f, 0.68f, 0.74f, 0.80f);
		style.Colors[ImGuiCol_ResizeGrip] = ImVec4(0.60f, 0.60f, 0.80f, 0.30f);
		style.Colors[ImGuiCol_ResizeGripHovered] = ImVec4(1.00f, 1.00f, 1.00f, 0.60f);
		style.Colors[ImGuiCol_ResizeGripActive] = ImVec4(1.00f, 1.00f, 1.00f, 0.90f);
		style.Colors[ImGuiCol_TextSelectedBg] = ImVec4(1.00f, 0.99f, 0.54f, 0.43f);
		style.Alpha = 1.0f;
		style.frameRounding = 4;
		style.IndentSpacing = 12.0f;
		style.frameBorderSize = 1.0f;
		style.WindowPadding = ImVec2{ 0.0f,0.0f };
	}

	// 加载图片
	LPDIRECT3DTEXTURE9 load_image(const char* f)
	{
		if (!g_device9) return nullptr;

		int width = 0, height = 0, channel = 0;
		unsigned char* data = stbi_load(f, &width, &height, &channel, 3);
		if (!data) return nullptr;

		LPDIRECT3DTEXTURE9 texture = nullptr;
		HRESULT hr = g_device9->CreateTexture(width, height, 1, D3DUSAGE_DYNAMIC, D3DFMT_X8R8G8B8, D3DPOOL_DEFAULT, &texture, NULL);
		if (FAILED(hr))
		{
			stbi_image_free(data);
			return nullptr;
		}

		int len = width * height * (channel + 1);
		std::unique_ptr buf(new unsigned char[len]);
		if (!buf)
		{
			stbi_image_free(data);
			texture->Release();
			return nullptr;
		}

		for (int i = 0; i < height; i++)
		{
			for (int j = 0; j < width; j++)
			{
				buf.get()[(i * width + j) * 4 + 0] = data[(i * width + j) * 3 + 2];
				buf.get()[(i * width + j) * 4 + 1] = data[(i * width + j) * 3 + 1];
				buf.get()[(i * width + j) * 4 + 2] = data[(i * width + j) * 3 + 0];
				buf.get()[(i * width + j) * 4 + 3] = 0xff;
			}
		}

		D3DLOCKED_RECT lock_rect{ 0 };
		hr = texture->LockRect(0, &lock_rect, NULL, 0);
		if (SUCCEEDED(hr) && lock_rect.pBits)
		{
			for (int y = 0; y < height; y++) memcpy((unsigned char*)lock_rect.pBits + lock_rect.Pitch * y, buf.get() + (width * (channel + 1)) * y, (width * (channel + 1)));
			texture->UnlockRect(NULL);
		}

		stbi_image_free(data);
		return texture;
	}

	LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
	{
		if (ImGui_ImplWin32_WndProcHandler(hWnd, message, wParam, lParam)) return true;

		switch (message)
		{
		case WM_SIZE:
			g_present.BackBufferWidth = LOWORD(lParam);
			g_present.BackBufferHeight = HIWORD(lParam);
			reset_device();
			return 0;
		case WM_DESTROY:
			exit(-1);
		}

		return DefWindowProcW(hWnd, message, wParam, lParam);
	}

	bool initialize(HWND h)
	{
		// 创建设备
		if (!create_device(h)) return false;

		// 创建imgui
		IMGUI_CHECKVERSION();
		ImGui::CreateContext();
		ImGuiIO& io = ImGui::GetIO(); (void)io;
		// ImGui::StyleColorsLight();
		// ImGui::StyleColorsClassic();
		// ImGui::StyleColorsDark();

		// 设置风格
		set_theme_style();

		// 加载中文字体
		io.Fonts->AddFontFromFileTTF("C:\Windows\Fonts\msyh.ttc", 18.0f, NULL, io.Fonts->GetGlyphRangesChineseFull());

		// 不需要ini文件
		io.IniFilename = NULL;
		io.LogFilename = NULL;

		// 初始化
		return ImGui_ImplWin32_Init(h) && ImGui_ImplDX9_Init(g_device9);
	}

	void render()
	{
		ImGui_ImplDX9_Newframe();
		ImGui_ImplWin32_Newframe();
		ImGui::Newframe();

		if (g_background == nullptr) g_background = load_image("C:\Users\Fengyihua\Desktop\aa.jpg");
		ImGui::GetBackgroundDrawList()->AddImage(g_background, ImVec2{ 0,0 }, ImVec2{ 1000,500 });

		// ImGui::ShowDemoWindow();
		draw();
		if (ImGui::Begin("123"))
		{
			static float col[4]{ 1.0f,1.0f,1.0f,1.0f };
			ImGuiStyle& style = ImGui::GetStyle();
			style.Colors[ImGuiCol_Text] = ImVec4(col[0], col[1], col[2], 1.0f);
			ImGui::ColorPicker4("c", col);
			ImGui::End();
		}

		ImGui::Endframe();
		g_device9->SetRenderState(D3DRS_ZENABLE, FALSE);
		g_device9->SetRenderState(D3DRS_ALPHABLENDENABLE, FALSE);
		g_device9->SetRenderState(D3DRS_SCISSORTESTENABLE, FALSE);
		g_device9->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, 0xFFFFFFFF, 1.0f, 0);
		if (g_device9->BeginScene() >= 0)
		{
			ImGui::Render();
			ImGui_ImplDX9_RenderDrawData(ImGui::GetDrawData());
			g_device9->EndScene();
		}

		if (g_device9->Present(NULL, NULL, NULL, NULL) == D3DERR_DEVICELOST
			&& g_device9->TestCooperativeLevel() == D3DERR_DEVICENOTRESET) reset_device();
	}

	void draw()
	{
		ImGuiWindowFlags flags = ImGuiWindowFlags_NoTitleBar
			| ImGuiWindowFlags_NoMove
			| ImGuiWindowFlags_NoResize
			| ImGuiWindowFlags_NoBackground;

		// ImGui::SetNextWindowBgAlpha(); 设置窗口背景透视度
		ImGui::SetNextWindowPos(ImVec2(0, 0), ImGuiCond_FirstUseEver);
		ImGui::SetNextWindowSize(ImVec2(800, 310), ImGuiCond_FirstUseEver);
		if (ImGui::Begin("Self", 0, flags))
		{
			const char* template_items_names[15] =
			{
				"Banana", "Apple", "Cherry", "Watermelon", "Grapefruit", "Strawberry", "Mango",
				"Kiwi", "Orange", "Pineapple", "Blueberry", "Plum", "Coconut", "Pear", "Apricot"
			};

			const float TEXT_base_HEIGHT = ImGui::GetTextLineHeightWithSpacing();
			static ImVec2 outer_size_value = ImVec2(0.0f, TEXT_base_HEIGHT * 12);

			struct MyItem
			{
				int ID;
				const char* Name;
				int Quantity;
			};
			static ImVector items;

			if (items.empty())
			{
				items.resize(30, MyItem());
				for (int n = 0; n < 30; n++)
				{
					const int template_n = n % IM_ARRAYSIZE(template_items_names);
					MyItem& item = items[n];
					item.ID = rand() % 100;
					item.Name = template_items_names[template_n];
					item.Quantity = rand() % 100;
				}
			}

			ImGuiTableFlags table_flags = ImGuiTableFlags_Resizable
				| ImGuiTableFlags_Reorderable
				| ImGuiTableFlags_Hideable
				| ImGuiTableFlags_RowBg
				| ImGuiTableFlags_Borders
				| ImGuiTableFlags_NoBordersInBody
				| ImGuiTableFlags_ScrollX
				| ImGuiTableFlags_ScrollY
				| ImGuiTableFlags_SizingFixedFit;

			if (ImGui::BeginTable("table_advanced", 6, table_flags))
			{
				ImGui::TableSetupColumn(u_utils::string_to_utf8("进程ID").c_str(), ImGuiTableColumnFlags_WidthFixed, 0.0f, 0);
				ImGui::TableSetupColumn(u_utils::string_to_utf8("进程名称").c_str(), ImGuiTableColumnFlags_WidthFixed, 0.0f, 1);
				ImGui::TableSetupColumn("Action", ImGuiTableColumnFlags_WidthFixed, 0.0f, 2);
				ImGui::TableSetupColumn("Quantity", ImGuiTableColumnFlags_WidthFixed, 0.0f, 3);
				ImGui::TableSetupColumn("Description", ImGuiTableColumnFlags_WidthFixed, 0.0f, 4);
				ImGui::TableSetupColumn("Hidden", ImGuiTableColumnFlags_WidthFixed, 0.0f, 5);
				ImGui::TableSetupScrollFreeze(1, 1);

				ImGui::TableHeadersRow();

				ImGui::PushButtonRepeat(true);

				ImGuiListClipper clipper;
				clipper.Begin(items.Size);
				while (clipper.Step())
				{
					for (int row_n = clipper.DisplayStart; row_n < clipper.DisplayEnd; row_n++)
					{
						MyItem* item = &items[row_n];

						bool item_is_selected = false;
						ImGui::PushID(item->ID);
						ImGui::TableNextRow();

						ImGui::TableSetColumnIndex(0);
						char label[32]{ 0 };
						wsprintfA(label, "%04d", item->ID);
						if (ImGui::Selectable(label, item_is_selected, ImGuiSelectableFlags_SpanAllColumns | ImGuiSelectableFlags_AllowItemOverlap))
						{
						}

						ImGui::TableSetColumnIndex(1);
						ImGui::TextUnformatted(item->Name);

						ImGui::TableSetColumnIndex(2);
						if (ImGui::SmallButton("Chop")) { item->Quantity += 1; } ImGui::SameLine();
						if (ImGui::SmallButton("Eat")) { item->Quantity -= 1; }

						ImGui::TableSetColumnIndex(3);
						ImGui::Text("%d", item->Quantity);

						ImGui::TableSetColumnIndex(4);
						ImGui::Text("Lorem ipsum dolor sit amet");

						ImGui::TableSetColumnIndex(5);
						ImGui::Text("1234");

						// ImGui::TableSetColumnIndex(6);
						// ImGui::Text("1234");

						ImGui::PopID();
					}
				}
				ImGui::PopButtonRepeat();
				ImGui::EndTable();
			}

			ImGui::End();
		}
	}
}