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@@ -1,457 +0,0 @@
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-// ImGui SDL2 binding with OpenGL3
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-// (SDL is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan graphics context creation, etc.)
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-// (GL3W is a helper library to access OpenGL functions since there is no standard header to access modern OpenGL functions easily. Alternatives are GLEW, Glad, etc.)
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-
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-// Implemented features:
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-// [X] User texture binding. Cast 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
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-
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-// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
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-// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
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-// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
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-// https://github.com/ocornut/imgui
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-
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-// CHANGELOG
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-// (minor and older changes stripped away, please see git history for details)
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-// 2018-02-16: Inputs: Added support for mouse cursors, honoring ImGui::GetMouseCursor() value.
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-// 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplSdlGL3_RenderDrawData() in the .h file so you can call it yourself.
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-// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
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-// 2018-02-06: Inputs: Added mapping for ImGuiKey_Space.
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-// 2018-02-05: Misc: Using SDL_GetPerformanceCounter() instead of SDL_GetTicks() to be able to handle very high framerate (1000+ FPS).
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-// 2018-02-05: Inputs: Keyboard mapping is using scancodes everywhere instead of a confusing mixture of keycodes and scancodes.
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-// 2018-01-20: Inputs: Added Horizontal Mouse Wheel support.
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-// 2018-01-19: Inputs: When available (SDL 2.0.4+) using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging. Otherwise (SDL 2.0.3 and before) testing for SDL_WINDOW_INPUT_FOCUS instead of SDL_WINDOW_MOUSE_FOCUS.
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-// 2018-01-18: Inputs: Added mapping for ImGuiKey_Insert.
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-// 2018-01-07: OpenGL: Changed GLSL shader version from 330 to 150.
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-// 2017-09-01: OpenGL: Save and restore current bound sampler. Save and restore current polygon mode.
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-// 2017-08-25: Inputs: MousePos set to -FLT_MAX,-FLT_MAX when mouse is unavailable/missing (instead of -1,-1).
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-// 2017-05-01: OpenGL: Fixed save and restore of current blend func state.
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-// 2017-05-01: OpenGL: Fixed save and restore of current GL_ACTIVE_TEXTURE.
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-// 2016-10-15: Misc: Added a void* user_data parameter to Clipboard function handlers.
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-// 2016-09-05: OpenGL: Fixed save and restore of current scissor rectangle.
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-// 2016-07-29: OpenGL: Explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
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-
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-#include "imgui.h"
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-#include "imgui_impl_sdl_gl3.h"
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-
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-// SDL,GL3W
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-#include <SDL.h>
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-#include <SDL_syswm.h>
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-#include <GL/gl3w.h> // This example is using gl3w to access OpenGL functions (because it is small). You may use glew/glad/glLoadGen/etc. whatever already works for you.
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-
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-// Data
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-static Uint64 g_Time = 0;
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-static bool g_MousePressed[3] = { false, false, false };
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-static GLuint g_FontTexture = 0;
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-static int g_ShaderHandle = 0, g_VertHandle = 0, g_FragHandle = 0;
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-static int g_AttribLocationTex = 0, g_AttribLocationProjMtx = 0;
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-static int g_AttribLocationPosition = 0, g_AttribLocationUV = 0, g_AttribLocationColor = 0;
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-static unsigned int g_VboHandle = 0, g_VaoHandle = 0, g_ElementsHandle = 0;
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-static SDL_Cursor* g_SdlCursors[ImGuiMouseCursor_Count_] = { 0 };
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-
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-// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
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-// Note that this implementation is little overcomplicated because we are saving/setting up/restoring every OpenGL state explicitly, in order to be able to run within any OpenGL engine that doesn't do so.
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-// If text or lines are blurry when integrating ImGui in your engine: in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f)
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-void ImGui_ImplSdlGL3_RenderDrawData(ImDrawData* draw_data)
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-{
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- // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
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- ImGuiIO& io = ImGui::GetIO();
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- int fb_width = (int)(io.DisplaySize.x * io.DisplayFramebufferScale.x);
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- int fb_height = (int)(io.DisplaySize.y * io.DisplayFramebufferScale.y);
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- if (fb_width == 0 || fb_height == 0)
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- return;
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- draw_data->ScaleClipRects(io.DisplayFramebufferScale);
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-
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- // Backup GL state
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- GLenum last_active_texture; glGetIntegerv(GL_ACTIVE_TEXTURE, (GLint*)&last_active_texture);
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- glActiveTexture(GL_TEXTURE0);
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- GLint last_program; glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
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- GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
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- GLint last_sampler; glGetIntegerv(GL_SAMPLER_BINDING, &last_sampler);
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- GLint last_array_buffer; glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
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- GLint last_element_array_buffer; glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING, &last_element_array_buffer);
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- GLint last_vertex_array; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array);
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- GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
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- GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
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- GLint last_scissor_box[4]; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box);
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- GLenum last_blend_src_rgb; glGetIntegerv(GL_BLEND_SRC_RGB, (GLint*)&last_blend_src_rgb);
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- GLenum last_blend_dst_rgb; glGetIntegerv(GL_BLEND_DST_RGB, (GLint*)&last_blend_dst_rgb);
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- GLenum last_blend_src_alpha; glGetIntegerv(GL_BLEND_SRC_ALPHA, (GLint*)&last_blend_src_alpha);
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- GLenum last_blend_dst_alpha; glGetIntegerv(GL_BLEND_DST_ALPHA, (GLint*)&last_blend_dst_alpha);
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- GLenum last_blend_equation_rgb; glGetIntegerv(GL_BLEND_EQUATION_RGB, (GLint*)&last_blend_equation_rgb);
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- GLenum last_blend_equation_alpha; glGetIntegerv(GL_BLEND_EQUATION_ALPHA, (GLint*)&last_blend_equation_alpha);
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- GLboolean last_enable_blend = glIsEnabled(GL_BLEND);
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- GLboolean last_enable_cull_face = glIsEnabled(GL_CULL_FACE);
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- GLboolean last_enable_depth_test = glIsEnabled(GL_DEPTH_TEST);
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- GLboolean last_enable_scissor_test = glIsEnabled(GL_SCISSOR_TEST);
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-
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- // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
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- glEnable(GL_BLEND);
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- glBlendEquation(GL_FUNC_ADD);
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- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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- glDisable(GL_CULL_FACE);
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- glDisable(GL_DEPTH_TEST);
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- glEnable(GL_SCISSOR_TEST);
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- glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
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-
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- // Setup viewport, orthographic projection matrix
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- glViewport(0, 0, (GLsizei)fb_width, (GLsizei)fb_height);
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- const float ortho_projection[4][4] =
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- {
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- { 2.0f/io.DisplaySize.x, 0.0f, 0.0f, 0.0f },
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- { 0.0f, 2.0f/-io.DisplaySize.y, 0.0f, 0.0f },
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- { 0.0f, 0.0f, -1.0f, 0.0f },
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- {-1.0f, 1.0f, 0.0f, 1.0f },
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- };
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- glUseProgram(g_ShaderHandle);
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- glUniform1i(g_AttribLocationTex, 0);
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- glUniformMatrix4fv(g_AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
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- glBindVertexArray(g_VaoHandle);
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- glBindSampler(0, 0); // Rely on combined texture/sampler state.
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-
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- for (int n = 0; n < draw_data->CmdListsCount; n++)
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- {
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- const ImDrawList* cmd_list = draw_data->CmdLists[n];
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- const ImDrawIdx* idx_buffer_offset = 0;
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-
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- glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
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- glBufferData(GL_ARRAY_BUFFER, (GLsizeiptr)cmd_list->VtxBuffer.Size * sizeof(ImDrawVert), (const GLvoid*)cmd_list->VtxBuffer.Data, GL_STREAM_DRAW);
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-
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- glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
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- glBufferData(GL_ELEMENT_ARRAY_BUFFER, (GLsizeiptr)cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx), (const GLvoid*)cmd_list->IdxBuffer.Data, GL_STREAM_DRAW);
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-
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- for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
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- {
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- const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
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- if (pcmd->UserCallback)
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- {
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- pcmd->UserCallback(cmd_list, pcmd);
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- }
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- else
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- {
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- glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId);
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- glScissor((int)pcmd->ClipRect.x, (int)(fb_height - pcmd->ClipRect.w), (int)(pcmd->ClipRect.z - pcmd->ClipRect.x), (int)(pcmd->ClipRect.w - pcmd->ClipRect.y));
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- glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer_offset);
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- }
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- idx_buffer_offset += pcmd->ElemCount;
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- }
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- }
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-
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- // Restore modified GL state
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- glUseProgram(last_program);
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- glBindTexture(GL_TEXTURE_2D, last_texture);
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- glBindSampler(0, last_sampler);
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- glActiveTexture(last_active_texture);
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- glBindVertexArray(last_vertex_array);
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- glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
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- glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
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- glBlendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
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- glBlendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
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- if (last_enable_blend) glEnable(GL_BLEND); else glDisable(GL_BLEND);
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- if (last_enable_cull_face) glEnable(GL_CULL_FACE); else glDisable(GL_CULL_FACE);
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- if (last_enable_depth_test) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
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- if (last_enable_scissor_test) glEnable(GL_SCISSOR_TEST); else glDisable(GL_SCISSOR_TEST);
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- glPolygonMode(GL_FRONT_AND_BACK, last_polygon_mode[0]);
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- glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
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- glScissor(last_scissor_box[0], last_scissor_box[1], (GLsizei)last_scissor_box[2], (GLsizei)last_scissor_box[3]);
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-}
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-
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-static const char* ImGui_ImplSdlGL3_GetClipboardText(void*)
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-{
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- return SDL_GetClipboardText();
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-}
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-
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-static void ImGui_ImplSdlGL3_SetClipboardText(void*, const char* text)
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-{
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- SDL_SetClipboardText(text);
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-}
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-
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-// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
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-// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
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-// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
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-// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
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-bool ImGui_ImplSdlGL3_ProcessEvent(SDL_Event* event)
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-{
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- ImGuiIO& io = ImGui::GetIO();
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- switch (event->type)
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- {
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- case SDL_MOUSEWHEEL:
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- {
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- if (event->wheel.x > 0) io.MouseWheelH += 1;
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- if (event->wheel.x < 0) io.MouseWheelH -= 1;
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- if (event->wheel.y > 0) io.MouseWheel += 1;
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- if (event->wheel.y < 0) io.MouseWheel -= 1;
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- return true;
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- }
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- case SDL_MOUSEBUTTONDOWN:
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- {
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- if (event->button.button == SDL_BUTTON_LEFT) g_MousePressed[0] = true;
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- if (event->button.button == SDL_BUTTON_RIGHT) g_MousePressed[1] = true;
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- if (event->button.button == SDL_BUTTON_MIDDLE) g_MousePressed[2] = true;
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- return true;
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- }
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- case SDL_TEXTINPUT:
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- {
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- io.AddInputCharactersUTF8(event->text.text);
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- return true;
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- }
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- case SDL_KEYDOWN:
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- case SDL_KEYUP:
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- {
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- int key = event->key.keysym.scancode;
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- IM_ASSERT(key >= 0 && key < IM_ARRAYSIZE(io.KeysDown));
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- io.KeysDown[key] = (event->type == SDL_KEYDOWN);
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- io.KeyShift = ((SDL_GetModState() & KMOD_SHIFT) != 0);
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- io.KeyCtrl = ((SDL_GetModState() & KMOD_CTRL) != 0);
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- io.KeyAlt = ((SDL_GetModState() & KMOD_ALT) != 0);
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- io.KeySuper = ((SDL_GetModState() & KMOD_GUI) != 0);
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- return true;
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- }
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- }
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- return false;
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-}
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-
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-void ImGui_ImplSdlGL3_CreateFontsTexture()
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-{
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- // Build texture atlas
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- ImGuiIO& io = ImGui::GetIO();
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- unsigned char* pixels;
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- int width, height;
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- io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); // Load as RGBA 32-bits for OpenGL3 demo because it is more likely to be compatible with user's existing shader.
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-
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- // Upload texture to graphics system
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- GLint last_texture;
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- glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
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- glGenTextures(1, &g_FontTexture);
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- glBindTexture(GL_TEXTURE_2D, g_FontTexture);
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- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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- glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
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- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
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-
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- // Store our identifier
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- io.Fonts->TexID = (void *)(intptr_t)g_FontTexture;
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-
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- // Restore state
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- glBindTexture(GL_TEXTURE_2D, last_texture);
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-}
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-
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-bool ImGui_ImplSdlGL3_CreateDeviceObjects()
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-{
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- // Backup GL state
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- GLint last_texture, last_array_buffer, last_vertex_array;
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- glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
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- glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
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- glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array);
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-
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- const GLchar *vertex_shader =
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- "#version 150\n"
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- "uniform mat4 ProjMtx;\n"
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- "in vec2 Position;\n"
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- "in vec2 UV;\n"
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- "in vec4 Color;\n"
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- "out vec2 Frag_UV;\n"
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- "out vec4 Frag_Color;\n"
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- "void main()\n"
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- "{\n"
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- " Frag_UV = UV;\n"
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- " Frag_Color = Color;\n"
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- " gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
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- "}\n";
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-
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- const GLchar* fragment_shader =
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- "#version 150\n"
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- "uniform sampler2D Texture;\n"
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- "in vec2 Frag_UV;\n"
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- "in vec4 Frag_Color;\n"
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- "out vec4 Out_Color;\n"
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- "void main()\n"
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- "{\n"
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- " Out_Color = Frag_Color * texture( Texture, Frag_UV.st);\n"
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- "}\n";
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-
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- g_ShaderHandle = glCreateProgram();
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- g_VertHandle = glCreateShader(GL_VERTEX_SHADER);
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- g_FragHandle = glCreateShader(GL_FRAGMENT_SHADER);
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- glShaderSource(g_VertHandle, 1, &vertex_shader, 0);
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- glShaderSource(g_FragHandle, 1, &fragment_shader, 0);
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- glCompileShader(g_VertHandle);
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- glCompileShader(g_FragHandle);
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- glAttachShader(g_ShaderHandle, g_VertHandle);
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- glAttachShader(g_ShaderHandle, g_FragHandle);
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- glLinkProgram(g_ShaderHandle);
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-
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- g_AttribLocationTex = glGetUniformLocation(g_ShaderHandle, "Texture");
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- g_AttribLocationProjMtx = glGetUniformLocation(g_ShaderHandle, "ProjMtx");
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- g_AttribLocationPosition = glGetAttribLocation(g_ShaderHandle, "Position");
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- g_AttribLocationUV = glGetAttribLocation(g_ShaderHandle, "UV");
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- g_AttribLocationColor = glGetAttribLocation(g_ShaderHandle, "Color");
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-
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- glGenBuffers(1, &g_VboHandle);
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- glGenBuffers(1, &g_ElementsHandle);
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-
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- glGenVertexArrays(1, &g_VaoHandle);
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|
|
- glBindVertexArray(g_VaoHandle);
|
|
|
- glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
|
|
|
- glEnableVertexAttribArray(g_AttribLocationPosition);
|
|
|
- glEnableVertexAttribArray(g_AttribLocationUV);
|
|
|
- glEnableVertexAttribArray(g_AttribLocationColor);
|
|
|
-
|
|
|
- glVertexAttribPointer(g_AttribLocationPosition, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, pos));
|
|
|
- glVertexAttribPointer(g_AttribLocationUV, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, uv));
|
|
|
- glVertexAttribPointer(g_AttribLocationColor, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, col));
|
|
|
-
|
|
|
- ImGui_ImplSdlGL3_CreateFontsTexture();
|
|
|
-
|
|
|
- // Restore modified GL state
|
|
|
- glBindTexture(GL_TEXTURE_2D, last_texture);
|
|
|
- glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
|
|
|
- glBindVertexArray(last_vertex_array);
|
|
|
-
|
|
|
- return true;
|
|
|
-}
|
|
|
-
|
|
|
-void ImGui_ImplSdlGL3_InvalidateDeviceObjects()
|
|
|
-{
|
|
|
- if (g_VaoHandle) glDeleteVertexArrays(1, &g_VaoHandle);
|
|
|
- if (g_VboHandle) glDeleteBuffers(1, &g_VboHandle);
|
|
|
- if (g_ElementsHandle) glDeleteBuffers(1, &g_ElementsHandle);
|
|
|
- g_VaoHandle = g_VboHandle = g_ElementsHandle = 0;
|
|
|
-
|
|
|
- if (g_ShaderHandle && g_VertHandle) glDetachShader(g_ShaderHandle, g_VertHandle);
|
|
|
- if (g_VertHandle) glDeleteShader(g_VertHandle);
|
|
|
- g_VertHandle = 0;
|
|
|
-
|
|
|
- if (g_ShaderHandle && g_FragHandle) glDetachShader(g_ShaderHandle, g_FragHandle);
|
|
|
- if (g_FragHandle) glDeleteShader(g_FragHandle);
|
|
|
- g_FragHandle = 0;
|
|
|
-
|
|
|
- if (g_ShaderHandle) glDeleteProgram(g_ShaderHandle);
|
|
|
- g_ShaderHandle = 0;
|
|
|
-
|
|
|
- if (g_FontTexture)
|
|
|
- {
|
|
|
- glDeleteTextures(1, &g_FontTexture);
|
|
|
- ImGui::GetIO().Fonts->TexID = 0;
|
|
|
- g_FontTexture = 0;
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-bool ImGui_ImplSdlGL3_Init(SDL_Window* window)
|
|
|
-{
|
|
|
- // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
|
|
|
- ImGuiIO& io = ImGui::GetIO();
|
|
|
- io.KeyMap[ImGuiKey_Tab] = SDL_SCANCODE_TAB;
|
|
|
- io.KeyMap[ImGuiKey_LeftArrow] = SDL_SCANCODE_LEFT;
|
|
|
- io.KeyMap[ImGuiKey_RightArrow] = SDL_SCANCODE_RIGHT;
|
|
|
- io.KeyMap[ImGuiKey_UpArrow] = SDL_SCANCODE_UP;
|
|
|
- io.KeyMap[ImGuiKey_DownArrow] = SDL_SCANCODE_DOWN;
|
|
|
- io.KeyMap[ImGuiKey_PageUp] = SDL_SCANCODE_PAGEUP;
|
|
|
- io.KeyMap[ImGuiKey_PageDown] = SDL_SCANCODE_PAGEDOWN;
|
|
|
- io.KeyMap[ImGuiKey_Home] = SDL_SCANCODE_HOME;
|
|
|
- io.KeyMap[ImGuiKey_End] = SDL_SCANCODE_END;
|
|
|
- io.KeyMap[ImGuiKey_Insert] = SDL_SCANCODE_INSERT;
|
|
|
- io.KeyMap[ImGuiKey_Delete] = SDL_SCANCODE_DELETE;
|
|
|
- io.KeyMap[ImGuiKey_Backspace] = SDL_SCANCODE_BACKSPACE;
|
|
|
- io.KeyMap[ImGuiKey_Space] = SDL_SCANCODE_SPACE;
|
|
|
- io.KeyMap[ImGuiKey_Enter] = SDL_SCANCODE_RETURN;
|
|
|
- io.KeyMap[ImGuiKey_Escape] = SDL_SCANCODE_ESCAPE;
|
|
|
- io.KeyMap[ImGuiKey_A] = SDL_SCANCODE_A;
|
|
|
- io.KeyMap[ImGuiKey_C] = SDL_SCANCODE_C;
|
|
|
- io.KeyMap[ImGuiKey_V] = SDL_SCANCODE_V;
|
|
|
- io.KeyMap[ImGuiKey_X] = SDL_SCANCODE_X;
|
|
|
- io.KeyMap[ImGuiKey_Y] = SDL_SCANCODE_Y;
|
|
|
- io.KeyMap[ImGuiKey_Z] = SDL_SCANCODE_Z;
|
|
|
-
|
|
|
- io.SetClipboardTextFn = ImGui_ImplSdlGL3_SetClipboardText;
|
|
|
- io.GetClipboardTextFn = ImGui_ImplSdlGL3_GetClipboardText;
|
|
|
- io.ClipboardUserData = NULL;
|
|
|
-
|
|
|
- g_SdlCursors[ImGuiMouseCursor_Arrow] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
|
|
|
- g_SdlCursors[ImGuiMouseCursor_TextInput] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_IBEAM);
|
|
|
- g_SdlCursors[ImGuiMouseCursor_ResizeAll] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEALL);
|
|
|
- g_SdlCursors[ImGuiMouseCursor_ResizeNS] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENS);
|
|
|
- g_SdlCursors[ImGuiMouseCursor_ResizeEW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEWE);
|
|
|
- g_SdlCursors[ImGuiMouseCursor_ResizeNESW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENESW);
|
|
|
- g_SdlCursors[ImGuiMouseCursor_ResizeNWSE] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENWSE);
|
|
|
-
|
|
|
-#ifdef _WIN32
|
|
|
- SDL_SysWMinfo wmInfo;
|
|
|
- SDL_VERSION(&wmInfo.version);
|
|
|
- SDL_GetWindowWMInfo(window, &wmInfo);
|
|
|
- io.ImeWindowHandle = wmInfo.info.win.window;
|
|
|
-#else
|
|
|
- (void)window;
|
|
|
-#endif
|
|
|
-
|
|
|
- return true;
|
|
|
-}
|
|
|
-
|
|
|
-void ImGui_ImplSdlGL3_Shutdown()
|
|
|
-{
|
|
|
- ImGui_ImplSdlGL3_InvalidateDeviceObjects();
|
|
|
-
|
|
|
- for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_Count_; cursor_n++)
|
|
|
- SDL_FreeCursor(g_SdlCursors[cursor_n]);
|
|
|
-}
|
|
|
-
|
|
|
-void ImGui_ImplSdlGL3_NewFrame(SDL_Window* window)
|
|
|
-{
|
|
|
- if (!g_FontTexture)
|
|
|
- ImGui_ImplSdlGL3_CreateDeviceObjects();
|
|
|
-
|
|
|
- ImGuiIO& io = ImGui::GetIO();
|
|
|
-
|
|
|
- // Setup display size (every frame to accommodate for window resizing)
|
|
|
- int w, h;
|
|
|
- int display_w, display_h;
|
|
|
- SDL_GetWindowSize(window, &w, &h);
|
|
|
- SDL_GL_GetDrawableSize(window, &display_w, &display_h);
|
|
|
- io.DisplaySize = ImVec2((float)w, (float)h);
|
|
|
- io.DisplayFramebufferScale = ImVec2(w > 0 ? ((float)display_w / w) : 0, h > 0 ? ((float)display_h / h) : 0);
|
|
|
-
|
|
|
- // Setup time step (we don't use SDL_GetTicks() because it is using millisecond resolution)
|
|
|
- static Uint64 frequency = SDL_GetPerformanceFrequency();
|
|
|
- Uint64 current_time = SDL_GetPerformanceCounter();
|
|
|
- io.DeltaTime = g_Time > 0 ? (float)((double)(current_time - g_Time) / frequency) : (float)(1.0f / 60.0f);
|
|
|
- g_Time = current_time;
|
|
|
-
|
|
|
- // Setup mouse inputs (we already got mouse wheel, keyboard keys & characters from our event handler)
|
|
|
- int mx, my;
|
|
|
- Uint32 mouse_buttons = SDL_GetMouseState(&mx, &my);
|
|
|
- io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX);
|
|
|
- io.MouseDown[0] = g_MousePressed[0] || (mouse_buttons & SDL_BUTTON(SDL_BUTTON_LEFT)) != 0; // If a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame.
|
|
|
- io.MouseDown[1] = g_MousePressed[1] || (mouse_buttons & SDL_BUTTON(SDL_BUTTON_RIGHT)) != 0;
|
|
|
- io.MouseDown[2] = g_MousePressed[2] || (mouse_buttons & SDL_BUTTON(SDL_BUTTON_MIDDLE)) != 0;
|
|
|
- g_MousePressed[0] = g_MousePressed[1] = g_MousePressed[2] = false;
|
|
|
-
|
|
|
- // We need to use SDL_CaptureMouse() to easily retrieve mouse coordinates outside of the client area. This is only supported from SDL 2.0.4 (released Jan 2016)
|
|
|
-#if (SDL_MAJOR_VERSION >= 2) && (SDL_MINOR_VERSION >= 0) && (SDL_PATCHLEVEL >= 4)
|
|
|
- if ((SDL_GetWindowFlags(window) & (SDL_WINDOW_MOUSE_FOCUS | SDL_WINDOW_MOUSE_CAPTURE)) != 0)
|
|
|
- io.MousePos = ImVec2((float)mx, (float)my);
|
|
|
- bool any_mouse_button_down = false;
|
|
|
- for (int n = 0; n < IM_ARRAYSIZE(io.MouseDown); n++)
|
|
|
- any_mouse_button_down |= io.MouseDown[n];
|
|
|
- if (any_mouse_button_down && (SDL_GetWindowFlags(window) & SDL_WINDOW_MOUSE_CAPTURE) == 0)
|
|
|
- SDL_CaptureMouse(SDL_TRUE);
|
|
|
- if (!any_mouse_button_down && (SDL_GetWindowFlags(window) & SDL_WINDOW_MOUSE_CAPTURE) != 0)
|
|
|
- SDL_CaptureMouse(SDL_FALSE);
|
|
|
-#else
|
|
|
- if ((SDL_GetWindowFlags(window) & SDL_WINDOW_INPUT_FOCUS) != 0)
|
|
|
- io.MousePos = ImVec2((float)mx, (float)my);
|
|
|
-#endif
|
|
|
-
|
|
|
- // Hide OS mouse cursor if ImGui is drawing it
|
|
|
- ImGuiMouseCursor cursor = ImGui::GetMouseCursor();
|
|
|
- if (io.MouseDrawCursor || cursor == ImGuiMouseCursor_None)
|
|
|
- {
|
|
|
- SDL_ShowCursor(0);
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- SDL_SetCursor(g_SdlCursors[cursor]);
|
|
|
- SDL_ShowCursor(1);
|
|
|
- }
|
|
|
-
|
|
|
- // Start the frame. This call will update the io.WantCaptureMouse, io.WantCaptureKeyboard flag that you can use to dispatch inputs (or not) to your application.
|
|
|
- ImGui::NewFrame();
|
|
|
-}
|
omar