get proper main.cpp
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01e85f5dc8
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103
main.cpp
103
main.cpp
@ -37,6 +37,8 @@
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#include <exiv2/exiv2.hpp>
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#include "lib/histogram.h"
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struct Args : public argparse::Args {
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std::string &fpath = arg("path to the image");
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};
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@ -212,38 +214,53 @@ void RotateImage(Texture t) {
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delete[] tempBuffer;
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}
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Texture LoadTexture(const char * path)
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{
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Texture LoadImage(const char * path) {
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const int channelCount = 4;
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int imageFileChannelCount;
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int width, height;
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image = (uint8_t *)stbi_load(path, &width, &height, &imageFileChannelCount, channelCount);
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if (image == NULL)
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{
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if (image == NULL) {
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fprintf(stderr, "%s\nFailed to open %s\n", stbi_failure_reason(), path);
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return {nullptr,{0,0}};
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}
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auto exif = printExifData(path);
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Texture t;
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t.size = ImVec2((float)width,(float)height);
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t.channels = channelCount;
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t.exif = exif;
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return t;
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}
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Texture LoadTexture(Texture tin) {
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GLenum dataFormat = GL_RGBA;
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GLuint textureHandle;
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glGenTextures(1, &textureHandle);
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glBindTexture(GL_TEXTURE_2D, textureHandle);
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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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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, dataFormat, GL_UNSIGNED_BYTE, image);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, tin.size.x, tin.size.y, 0, dataFormat, GL_UNSIGNED_BYTE, image);
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Texture t;
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Texture t = tin;
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t.texture = (void*)(uintptr_t)(textureHandle);
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t.size = ImVec2((float)width,(float)height);
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t.channels = channelCount;
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t.exif = exif;
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if (t.exif.ImageOrientation == "3") {
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RotateImage(t);
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ReloadTexture(t, t.size.x, t.size.y);
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t = ReloadTexture(t, t.size.y, t.size.x);
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RotateImage(t);
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t = ReloadTexture(t, t.size.y, t.size.x);
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} else if (t.exif.ImageOrientation == "6") {
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RotateImage(t);
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t = ReloadTexture(t, t.size.y, t.size.x);
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} else if (t.exif.ImageOrientation == "8") {
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RotateImage(t);
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t = ReloadTexture(t, t.size.y, t.size.x);
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RotateImage(t);
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t = ReloadTexture(t, t.size.y, t.size.x);
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RotateImage(t);
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t = ReloadTexture(t, t.size.y, t.size.x);
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}
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return t;
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}
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@ -254,6 +271,19 @@ const int MAX_ANNOATED_TEXELS = 10000;
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// Main code
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int main(int argc, char* argv[]) {
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Texture t;
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try {
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auto args = argparse::parse<Args>(argc, argv, true);
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t = LoadImage(args.fpath.c_str());
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if (t.texture == nullptr) {
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std::cerr << "failed load image" << std::endl;
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return -1;
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}
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} catch (const std::runtime_error &e) {
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std::cerr << "failed to parse arguments: " << e.what() << std::endl;
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return -1;
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}
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// Setup SDL
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if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) !=
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0) {
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@ -266,6 +296,7 @@ int main(int argc, char* argv[]) {
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bool AA_ENABLED = true;
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bool SHOW_HELP = false;
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bool SHOW_EXIF = false;
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bool SHOW_HISTOGRAM = false;
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int MODE = 0;
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// Decide GL+GLSL versions
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@ -306,9 +337,17 @@ int main(int argc, char* argv[]) {
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SDL_WindowFlags window_flags =
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(SDL_WindowFlags)(SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE |
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SDL_WINDOW_ALLOW_HIGHDPI);
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int wh = 800;
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int ww = 1280;
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if (t.size.y > t.size.x) {
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ww = 500;
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wh = 1280;
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}
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SDL_Window *window =
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SDL_CreateWindow("tview", SDL_WINDOWPOS_CENTERED,
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SDL_WINDOWPOS_CENTERED, 1280, 720, window_flags);
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SDL_WINDOWPOS_CENTERED, ww, wh, window_flags);
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if (window == nullptr) {
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printf("Error: SDL_CreateWindow(): %s\n", SDL_GetError());
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return -1;
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@ -334,16 +373,11 @@ int main(int argc, char* argv[]) {
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ImGui_ImplOpenGL3_Init(glsl_version);
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ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
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Texture t;
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auto flags = ImGuiTexInspect::InspectorFlags_FillVertical | ImGuiTexInspect::InspectorFlags_FillHorizontal;
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try {
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auto args = argparse::parse<Args>(argc, argv, true);
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t = LoadTexture(args.fpath.c_str());
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} catch (const std::runtime_error &e) {
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std::cerr << "failed to parse arguments: " << e.what() << std::endl;
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return -1;
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}
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t = LoadTexture(t);
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Histogram histogram = Histogram(t.size.x, t.size.y, t.channels);
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histogram.Load(image);
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// Main loop
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bool done = false;
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@ -390,6 +424,9 @@ int main(int argc, char* argv[]) {
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case SDL_SCANCODE_E:
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SHOW_EXIF = !SHOW_EXIF;
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break;
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case SDL_SCANCODE_C:
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SHOW_HISTOGRAM = !SHOW_HISTOGRAM;
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break;
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default:
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break;
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}
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@ -497,6 +534,7 @@ int main(int argc, char* argv[]) {
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ImGui::Text("\tFloat Values");
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ImGui::Separator();
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ImGui::Text("h - show help popup");
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ImGui::Text("c - toggle color histogram");
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ImGui::Text("e - toggle EXIF info");
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ImGui::Separator();
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ImGui::Text("q - quit");
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@ -596,6 +634,12 @@ int main(int argc, char* argv[]) {
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ImGui::TableSetColumnIndex(1);
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ImGui::Text("%sx%s", t.exif.ImageDimensionX.c_str(), t.exif.ImageDimensiony.c_str());
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ImGui::TableNextRow();
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ImGui::TableSetColumnIndex(0);
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ImGui::Text("Orientation");
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ImGui::TableSetColumnIndex(1);
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ImGui::Text("%s", t.exif.ImageOrientation.c_str());
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ImGui::EndTable();
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}
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@ -623,8 +667,23 @@ int main(int argc, char* argv[]) {
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ImGui::End();
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}
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if (SHOW_HISTOGRAM) {
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ImGuiWindowClass topmost;
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topmost.ClassId = ImHashStr("TopMost");
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topmost.ViewportFlagsOverrideSet = ImGuiViewportFlags_TopMost;
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ImGui::SetNextWindowClass(&topmost);
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ImGui::Begin("Histogram", NULL, ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoFocusOnAppearing);
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histogram.Draw();
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ImGui::Separator();
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ImGui::Text("Press c to hide");
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ImGui::End();
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}
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}
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// Rendering
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ImGui::Render();
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glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);
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