void Menu::DisplayError(const std::string & msg)
{
play_error_sound();
std::cerr << msg << std::endl;
Question question(Question::WARNING);
question.Set(msg, true, 0);
question.Ask();
}
static GLboolean load_image(char * filename)
{
GLint x,y,n;
if (image_data != NULL)
{
stbi_image_free(image_data);
}
image_data = stbi_load(filename, &x, &y, &n, 4);
if (image_data == NULL) {
play_error_sound();
printf("Error: Failed to open image: %s.\n", filename);
return GL_FALSE;
}
if (x != TEXTURE_WIDTH || y !=TEXTURE_HEIGHT)
{
play_error_sound();
printf("Error: Image should be %dpx x %dpx. Scaling isn't currently supported.\n", TEXTURE_WIDTH, TEXTURE_HEIGHT);
return GL_FALSE;
}
glBindTexture(GL_TEXTURE_2D, textures[1]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
//Just in case even though not using mipmaps.
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
glTexImage2D(GL_TEXTURE_2D, 0, n, x, y, 0, GL_RGBA, GL_UNSIGNED_BYTE, (GLvoid*) image_data);
return GL_TRUE;
}
static void open_file(void)
{
OPENFILENAME ofn;
TCHAR szFile[MAX_PATH];
TCHAR cur_dir[FILENAME_MAX];
size_t file_len;
size_t converted_len = 0;
char converted_filename[MAX_PATH];
opening_file = GL_TRUE;
szFile[0] = '\0';
szFile[1] = '\0';
//Get current working directory.
GetCurrentDirectory(sizeof(TCHAR) * FILENAME_MAX, cur_dir);
//Initialize OPENFILENAME
memset(&ofn, 0, sizeof(ofn));
ofn.lStructSize = sizeof(ofn);
ofn.hwndOwner = NULL;
ofn.lpstrFile = szFile;
ofn.lpstrFile[0] = '\0';
ofn.nMaxFile = MAX_PATH;
ofn.lpstrFilter = TEXT("Images (*.jpg;*.png;*.bmp;*.tga;*.psd)\0*.jpg;*.png;*.bmp;*.tga;*.psd\0");
ofn.lpstrInitialDir = TEXT("Images");
ofn.lpstrTitle = TEXT("Open 512x512 image ...");
ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;
if(GetOpenFileName(&ofn))
{
file_len = wcslen(ofn.lpstrFile) + 1;
wcstombs_s(&converted_len, converted_filename, file_len, ofn.lpstrFile, _TRUNCATE);
if (converted_len != file_len) {
play_error_sound();
printf("Error: Can't open unicode paths.");
opening_file = GL_FALSE;
return;
}
if(load_image(converted_filename)) {
draw_histogram(current_histogram);
}
}
//Set the old working directory.
SetCurrentDirectory(cur_dir);
opening_file = GL_FALSE;
}
