100 lines
2.0 KiB
Odin
100 lines
2.0 KiB
Odin
package main
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import "core:fmt"
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import "core:os"
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import SDL "vendor:sdl2"
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WINDOW_TITLE :: "PPM Viewer"
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WINDOW_X := i32(400)
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WINDOW_Y := i32(400)
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WINDOW_WIDTH_MIN := i32(920)
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WINDOW_HEIGHT_MIN := i32(920)
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WINDOW_FLAGS :: SDL.WindowFlags{.SHOWN, .RESIZABLE, .ALWAYS_ON_TOP}
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print_usage :: proc() {
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fmt.printfln("Usage:\n\t%s [ppm file]", os.args[0])
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os.exit(1)
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}
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main :: proc() {
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file := Ppm_file{}
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if len(os.args) > 3 || len(os.args) < 2 {
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print_usage()
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}
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filename := os.args[1]
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success := load_ppm(&file, filename)
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if !success {
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fmt.eprintfln("Could not load file %s", filename)
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os.exit(1)
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}
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ppm_parse(&file)
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window_width: i32 = i32(
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file.width,
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); if i32(file.width) < WINDOW_WIDTH_MIN {window_width = WINDOW_WIDTH_MIN}
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window_height: i32 = i32(
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file.width,
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); if i32(file.height) < WINDOW_WIDTH_MIN {window_height = WINDOW_HEIGHT_MIN}
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sdl_init_error := SDL.Init(SDL.INIT_VIDEO)
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assert(sdl_init_error == 0, SDL.GetErrorString())
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defer SDL.Quit()
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window := SDL.CreateWindow(
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WINDOW_TITLE,
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SDL.WINDOWPOS_CENTERED,
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SDL.WINDOWPOS_CENTERED,
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window_width,
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window_height,
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WINDOW_FLAGS,
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)
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assert(window != nil, SDL.GetErrorString())
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defer SDL.DestroyWindow(window)
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surface := SDL.GetWindowSurface(window)
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colour_bg := SDL.MapRGB(surface.format, 42, 42, 42)
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SDL.FillRect(surface, nil, colour_bg)
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i := 0
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pixel := SDL.Rect{0, 0, 1, 1}
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for y: i32 = 0; y < i32(file.height); y += 1 {
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for x: i32 = 0; x < i32(file.width); x += 1 {
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red: u8
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green: u8
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blue: u8
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red = file.pixels[i].red
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green = file.pixels[i].green
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blue = file.pixels[i].blue
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pixel.x = x
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pixel.y = y
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SDL.FillRect(surface, &pixel, SDL.MapRGB(surface.format, red, green, blue))
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i += 1
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}
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}
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SDL.UpdateWindowSurface(window)
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//Loop!
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quit := false
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e: SDL.Event
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for (!quit) {
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for SDL.PollEvent(&e) {
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#partial switch (e.type) {
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case .QUIT:
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quit = true
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case .KEYDOWN:
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#partial switch (e.key.keysym.sym) {
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case .ESCAPE:
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quit = true
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}
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}
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}
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}
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}
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