64 lines
No EOL
1.2 KiB
Odin
64 lines
No EOL
1.2 KiB
Odin
package showimage
|
|
|
|
import "core:os"
|
|
import s "core:strings"
|
|
import rl "vendor:raylib"
|
|
|
|
path: string
|
|
tex: ^rl.Texture
|
|
zoom: f32 = 1
|
|
offset: [2]f32
|
|
|
|
main :: proc() {
|
|
config: rl.ConfigFlags = { .WINDOW_RESIZABLE }
|
|
rl.InitWindow(800, 600, "showimage")
|
|
rl.SetWindowState(config)
|
|
|
|
if len(os.args) > 1 {
|
|
path = os.args[1]
|
|
t := rl.LoadTexture(s.clone_to_cstring(path))
|
|
tex = &t
|
|
reset_zoom()
|
|
}
|
|
|
|
for !rl.WindowShouldClose() {
|
|
scroll := rl.GetMouseWheelMove()
|
|
if scroll > 0 {
|
|
zoom *= 2
|
|
} else if scroll < 0 {
|
|
zoom /= 2
|
|
}
|
|
if rl.IsMouseButtonDown(rl.MouseButton.LEFT) {
|
|
offset += rl.GetMouseDelta()
|
|
}
|
|
if rl.IsMouseButtonPressed(rl.MouseButton.RIGHT) {
|
|
offset = 0
|
|
reset_zoom()
|
|
}
|
|
rl.BeginDrawing()
|
|
rl.ClearBackground({50, 50, 50, 255})
|
|
if tex != nil {
|
|
rl.DrawTextureEx(tex^, offset, 0, zoom, rl.WHITE)
|
|
}
|
|
rl.EndDrawing()
|
|
}
|
|
rl.CloseWindow()
|
|
}
|
|
|
|
reset_zoom :: proc() {
|
|
screen_width := rl.GetRenderWidth()
|
|
fit_x: i32 = 1
|
|
for fit_x * tex.width < screen_width {
|
|
fit_x *= 2
|
|
}
|
|
fit_x /= 2
|
|
|
|
screen_height := rl.GetRenderHeight()
|
|
fit_y: i32 = 1
|
|
for fit_y * tex.height < screen_height {
|
|
fit_y *= 2
|
|
}
|
|
fit_y /= 2
|
|
|
|
zoom = f32(min(fit_x, fit_y))
|
|
} |