833 lines
21 KiB
V
833 lines
21 KiB
V
/**********************************************************************
|
|
*
|
|
* simple Picture Viewer V. 0.9
|
|
*
|
|
* Copyright (c) 2021 Dario Deledda. All rights reserved.
|
|
* Use of this source code is governed by an MIT license
|
|
* that can be found in the LICENSE file.
|
|
*
|
|
* TODO:
|
|
* - add an example with shaders
|
|
**********************************************************************/
|
|
import os
|
|
import gg
|
|
import gx
|
|
import sokol.gfx
|
|
import sokol.sgl
|
|
import sokol.sapp
|
|
import stbi
|
|
import szip
|
|
import strings
|
|
|
|
// Help text
|
|
const (
|
|
help_text_rows = [
|
|
'Image Viwer 0.9 help.',
|
|
'',
|
|
'ESC/q - Quit',
|
|
'cur. right - Next image',
|
|
'cur. left - Previous image',
|
|
'cur. up - Next folder',
|
|
'cur. down - Previous folder',
|
|
'F - Toggle full screen',
|
|
'R - Rotate image of 90 degree',
|
|
'I - Toggle the info text',
|
|
'',
|
|
'mouse wheel - next/previous images',
|
|
'keep pressed left Mouse button - Pan on the image',
|
|
'keep pressed rigth Mouse button - Zoom on the image',
|
|
]
|
|
)
|
|
|
|
const (
|
|
win_width = 800
|
|
win_height = 800
|
|
bg_color = gx.black
|
|
pi_2 = 3.14159265359 / 2.0
|
|
uv = [f32(0), 0, 1, 0, 1, 1, 0, 1]! // used for zoom icon during rotations
|
|
|
|
text_drop_files = 'Drop here some images/folder/zip to navigate in the pics'
|
|
text_scanning = 'Scanning...'
|
|
text_loading = 'Loading...'
|
|
)
|
|
|
|
enum Viewer_state {
|
|
loading
|
|
scanning
|
|
show
|
|
error
|
|
}
|
|
|
|
struct App {
|
|
mut:
|
|
gg &gg.Context
|
|
pip_viewer sgl.Pipeline
|
|
texture gfx.Image
|
|
init_flag bool
|
|
frame_count int
|
|
mouse_x int = -1
|
|
mouse_y int = -1
|
|
scroll_y int
|
|
|
|
state Viewer_state = .scanning
|
|
// translation
|
|
tr_flag bool
|
|
tr_x f32 = 0.0
|
|
tr_y f32 = 0.0
|
|
last_tr_x f32 = 0.0
|
|
last_tr_y f32 = 0.0
|
|
// scaling
|
|
sc_flag bool
|
|
scale f32 = 1.0
|
|
sc_x f32 = 0.0
|
|
sc_y f32 = 0.0
|
|
last_sc_x f32 = 0.0
|
|
last_sc_y f32 = 0.0
|
|
// loaded image
|
|
img_w int
|
|
img_h int
|
|
img_ratio f32 = 1.0
|
|
// item list
|
|
item_list &Item_list
|
|
// Text info and help
|
|
show_info_flag bool = true
|
|
show_help_flag bool
|
|
// zip container
|
|
zip &szip.Zip // pointer to the szip structure
|
|
zip_index int = -1 // index of the zip contaire item
|
|
// memory buffer
|
|
mem_buf voidptr // buffer used to load items from files/containers
|
|
mem_buf_size int // size of the buffer
|
|
// font
|
|
font_path string // path to the temp font file
|
|
// logo
|
|
logo_path string // path of the temp font logo
|
|
logo_texture gfx.Image
|
|
logo_w int
|
|
logo_h int
|
|
logo_ratio f32 = 1.0
|
|
// string builder
|
|
bl strings.Builder = strings.new_builder(512)
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Texture functions
|
|
*
|
|
******************************************************************************/
|
|
fn create_texture(w int, h int, buf &u8) gfx.Image {
|
|
sz := w * h * 4
|
|
mut img_desc := gfx.ImageDesc{
|
|
width: w
|
|
height: h
|
|
num_mipmaps: 0
|
|
min_filter: .linear
|
|
mag_filter: .linear
|
|
// usage: .dynamic
|
|
wrap_u: .clamp_to_edge
|
|
wrap_v: .clamp_to_edge
|
|
label: &byte(0)
|
|
d3d11_texture: 0
|
|
}
|
|
// comment if .dynamic is enabled
|
|
img_desc.data.subimage[0][0] = gfx.Range{
|
|
ptr: buf
|
|
size: usize(sz)
|
|
}
|
|
|
|
sg_img := gfx.make_image(&img_desc)
|
|
return sg_img
|
|
}
|
|
|
|
fn destroy_texture(sg_img gfx.Image) {
|
|
gfx.destroy_image(sg_img)
|
|
}
|
|
|
|
// Use only if: .dynamic is enabled
|
|
fn update_text_texture(sg_img gfx.Image, w int, h int, buf &byte) {
|
|
sz := w * h * 4
|
|
mut tmp_sbc := gfx.ImageData{}
|
|
tmp_sbc.subimage[0][0] = gfx.Range{
|
|
ptr: buf
|
|
size: usize(sz)
|
|
}
|
|
gfx.update_image(sg_img, &tmp_sbc)
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Memory buffer
|
|
*
|
|
******************************************************************************/
|
|
[inline]
|
|
fn (mut app App) resize_buf_if_needed(in_size int) {
|
|
// manage the memory buffer
|
|
if app.mem_buf_size < in_size {
|
|
println('Managing FILE memory buffer, allocated [$in_size]Bytes')
|
|
// free previous buffer if any exist
|
|
if app.mem_buf_size > 0 {
|
|
unsafe {
|
|
free(app.mem_buf)
|
|
}
|
|
}
|
|
// allocate the memory
|
|
unsafe {
|
|
app.mem_buf = malloc(int(in_size))
|
|
app.mem_buf_size = int(in_size)
|
|
}
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Loading functions
|
|
*
|
|
******************************************************************************/
|
|
// read_bytes from file in `path` in the memory buffer of app.
|
|
[manualfree]
|
|
fn (mut app App) read_bytes(path string) bool {
|
|
mut fp := os.vfopen(path, 'rb') or {
|
|
eprintln('ERROR: Can not open the file [$path].')
|
|
return false
|
|
}
|
|
defer {
|
|
C.fclose(fp)
|
|
}
|
|
cseek := C.fseek(fp, 0, C.SEEK_END)
|
|
if cseek != 0 {
|
|
eprintln('ERROR: Can not seek in the file [$path].')
|
|
return false
|
|
}
|
|
fsize := C.ftell(fp)
|
|
if fsize < 0 {
|
|
eprintln('ERROR: File [$path] has size is 0.')
|
|
return false
|
|
}
|
|
C.rewind(fp)
|
|
|
|
app.resize_buf_if_needed(int(fsize))
|
|
|
|
nr_read_elements := int(C.fread(app.mem_buf, fsize, 1, fp))
|
|
if nr_read_elements == 0 && fsize > 0 {
|
|
eprintln('ERROR: Can not read the file [$path] in the memory buffer.')
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
// read a file as []byte
|
|
pub fn read_bytes_from_file(file_path string) []byte {
|
|
mut buffer := []byte{}
|
|
buffer = os.read_bytes(file_path) or {
|
|
eprintln('ERROR: Texure file: [$file_path] NOT FOUND.')
|
|
exit(0)
|
|
}
|
|
return buffer
|
|
}
|
|
|
|
fn (mut app App) load_texture_from_buffer(buf voidptr, buf_len int) (gfx.Image, int, int) {
|
|
// load image
|
|
stbi.set_flip_vertically_on_load(true)
|
|
img := stbi.load_from_memory(buf, buf_len) or {
|
|
eprintln('ERROR: Can not load image from buffer, file: [${app.item_list.lst[app.item_list.item_index]}].')
|
|
return app.logo_texture, app.logo_w, app.logo_h
|
|
// exit(1)
|
|
}
|
|
res := create_texture(int(img.width), int(img.height), img.data)
|
|
unsafe {
|
|
img.free()
|
|
}
|
|
return res, int(img.width), int(img.height)
|
|
}
|
|
|
|
pub fn (mut app App) load_texture_from_file(file_name string) (gfx.Image, int, int) {
|
|
app.read_bytes(file_name)
|
|
return app.load_texture_from_buffer(app.mem_buf, app.mem_buf_size)
|
|
}
|
|
|
|
pub fn show_logo(mut app App) {
|
|
clear_modifier_params(mut app)
|
|
if app.texture != app.logo_texture {
|
|
destroy_texture(app.texture)
|
|
}
|
|
app.texture = app.logo_texture
|
|
app.img_w = app.logo_w
|
|
app.img_h = app.logo_h
|
|
app.img_ratio = f32(app.img_w) / f32(app.img_h)
|
|
// app.gg.refresh_ui()
|
|
}
|
|
|
|
pub fn load_image(mut app App) {
|
|
if app.item_list.loaded == false || app.init_flag == false {
|
|
// show_logo(mut app)
|
|
// app.state = .show
|
|
return
|
|
}
|
|
app.state = .loading
|
|
clear_modifier_params(mut app)
|
|
// destroy the texture, avoid to destroy the logo
|
|
if app.texture != app.logo_texture {
|
|
destroy_texture(app.texture)
|
|
}
|
|
|
|
// load from .ZIP file
|
|
if app.item_list.is_inside_a_container() == true {
|
|
app.texture, app.img_w, app.img_h = app.load_texture_from_zip() or {
|
|
eprintln('ERROR: Can not load image from .ZIP file [${app.item_list.lst[app.item_list.item_index]}].')
|
|
show_logo(mut app)
|
|
app.state = .show
|
|
return
|
|
}
|
|
app.img_ratio = f32(app.img_w) / f32(app.img_h)
|
|
app.state = .show
|
|
// app.gg.refresh_ui()
|
|
return
|
|
}
|
|
|
|
// if we are out of the zip, close it
|
|
if app.zip_index >= 0 {
|
|
app.zip_index = -1
|
|
app.zip.close()
|
|
}
|
|
|
|
file_path := app.item_list.get_file_path()
|
|
if file_path.len > 0 {
|
|
// println("${app.item_list.lst[app.item_list.item_index]} $file_path ${app.item_list.lst.len}")
|
|
app.texture, app.img_w, app.img_h = app.load_texture_from_file(file_path)
|
|
app.img_ratio = f32(app.img_w) / f32(app.img_h)
|
|
// println("texture: [${app.img_w},${app.img_h}] ratio: ${app.img_ratio}")
|
|
} else {
|
|
app.texture = app.logo_texture
|
|
app.img_w = app.logo_w
|
|
app.img_h = app.logo_h
|
|
app.img_ratio = f32(app.img_w) / f32(app.img_h)
|
|
println('texture NOT FOUND: use logo!')
|
|
}
|
|
app.state = .show
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Init / Cleanup
|
|
*
|
|
******************************************************************************/
|
|
fn app_init(mut app App) {
|
|
app.init_flag = true
|
|
|
|
// 3d pipeline
|
|
mut pipdesc := gfx.PipelineDesc{}
|
|
unsafe { C.memset(&pipdesc, 0, sizeof(pipdesc)) }
|
|
|
|
color_state := gfx.ColorState{
|
|
blend: gfx.BlendState{
|
|
enabled: true
|
|
src_factor_rgb: .src_alpha
|
|
dst_factor_rgb: .one_minus_src_alpha
|
|
}
|
|
}
|
|
pipdesc.colors[0] = color_state
|
|
|
|
pipdesc.depth = gfx.DepthState{
|
|
write_enabled: true
|
|
compare: .less_equal
|
|
}
|
|
pipdesc.cull_mode = .back
|
|
app.pip_viewer = sgl.make_pipeline(&pipdesc)
|
|
|
|
// load logo
|
|
app.logo_texture, app.logo_w, app.logo_h = app.load_texture_from_file(app.logo_path)
|
|
app.logo_ratio = f32(app.img_w) / f32(app.img_h)
|
|
|
|
app.img_w = app.logo_w
|
|
app.img_h = app.logo_h
|
|
app.img_ratio = app.logo_ratio
|
|
app.texture = app.logo_texture
|
|
|
|
println('INIT DONE!')
|
|
|
|
// init done, load the first image if any
|
|
load_image(mut app)
|
|
}
|
|
|
|
fn cleanup(mut app App) {
|
|
gfx.shutdown()
|
|
|
|
// delete temp files
|
|
os.rm(app.font_path) or { eprintln('ERROR: Can not delete temp font file.') }
|
|
os.rm(app.logo_path) or { eprintln('ERROR: Can not delete temp logo file.') }
|
|
println('Cleaning done.')
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Draw functions
|
|
*
|
|
******************************************************************************/
|
|
[manualfree]
|
|
fn frame(mut app App) {
|
|
ws := gg.window_size_real_pixels()
|
|
if ws.width <= 0 || ws.height <= 0 {
|
|
return
|
|
}
|
|
|
|
mut ratio := f32(ws.width) / ws.height
|
|
dw := ws.width
|
|
dh := ws.height
|
|
|
|
app.gg.begin()
|
|
sgl.defaults()
|
|
|
|
// set viewport
|
|
sgl.viewport(0, 0, dw, dh, true)
|
|
|
|
// enable our pipeline
|
|
sgl.load_pipeline(app.pip_viewer)
|
|
sgl.enable_texture()
|
|
sgl.texture(app.texture)
|
|
|
|
// translation
|
|
tr_x := app.tr_x / app.img_w
|
|
tr_y := -app.tr_y / app.img_h
|
|
sgl.push_matrix()
|
|
sgl.translate(tr_x, tr_y, 0.0)
|
|
// scaling/zoom
|
|
sgl.scale(2.0 * app.scale, 2.0 * app.scale, 0.0)
|
|
// roation
|
|
mut rotation := 0
|
|
if app.state == .show && app.item_list.n_item > 0 {
|
|
rotation = app.item_list.lst[app.item_list.item_index].rotation
|
|
sgl.rotate(pi_2 * f32(rotation), 0.0, 0.0, -1.0)
|
|
}
|
|
|
|
// draw the image
|
|
mut w := f32(0.5)
|
|
mut h := f32(0.5)
|
|
|
|
// for 90 and 270 degree invert w and h
|
|
// rotation change image ratio, manage it
|
|
if rotation & 1 == 1 {
|
|
tmp := w
|
|
w = h
|
|
h = tmp
|
|
h /= app.img_ratio * ratio
|
|
} else {
|
|
h /= app.img_ratio / ratio
|
|
}
|
|
|
|
// manage image overflow in case of strange scales
|
|
if h > 0.5 {
|
|
reduction_factor := 0.5 / h
|
|
h = h * reduction_factor
|
|
w = w * reduction_factor
|
|
}
|
|
if w > 0.5 {
|
|
reduction_factor := 0.5 / w
|
|
h = h * reduction_factor
|
|
w = w * reduction_factor
|
|
}
|
|
|
|
// println("$w,$h")
|
|
// white multiplicator for now
|
|
mut c := [byte(255), 255, 255]!
|
|
sgl.begin_quads()
|
|
sgl.v2f_t2f_c3b(-w, -h, 0, 0, c[0], c[1], c[2])
|
|
sgl.v2f_t2f_c3b(w, -h, 1, 0, c[0], c[1], c[2])
|
|
sgl.v2f_t2f_c3b(w, h, 1, 1, c[0], c[1], c[2])
|
|
sgl.v2f_t2f_c3b(-w, h, 0, 1, c[0], c[1], c[2])
|
|
sgl.end()
|
|
|
|
// restore all the transformations
|
|
sgl.pop_matrix()
|
|
|
|
// Zoom icon
|
|
/*
|
|
if app.show_info_flag == true && app.scale > 1 {
|
|
mut bw := f32(0.25)
|
|
mut bh := f32(0.25 / app.img_ratio)
|
|
|
|
// manage the rotations
|
|
if rotation & 1 == 1 {
|
|
bw,bh = bh,bw
|
|
}
|
|
mut bx := f32(1 - bw)
|
|
mut by := f32(1 - bh)
|
|
if rotation & 1 == 1 {
|
|
bx,by = by,bx
|
|
}
|
|
|
|
bh_old1 := bh
|
|
bh *= ratio
|
|
by += (bh_old1 - bh)
|
|
|
|
// draw the zoom icon
|
|
sgl.begin_quads()
|
|
r := int(u32(rotation) << 1)
|
|
sgl.v2f_t2f_c3b(bx , by , uv[(0 + r) & 7] , uv[(1 + r) & 7], c[0], c[1], c[2])
|
|
sgl.v2f_t2f_c3b(bx + bw, by , uv[(2 + r) & 7] , uv[(3 + r) & 7], c[0], c[1], c[2])
|
|
sgl.v2f_t2f_c3b(bx + bw, by + bh, uv[(4 + r) & 7] , uv[(5 + r) & 7], c[0], c[1], c[2])
|
|
sgl.v2f_t2f_c3b(bx , by + bh, uv[(6 + r) & 7] , uv[(7 + r) & 7], c[0], c[1], c[2])
|
|
sgl.end()
|
|
|
|
// draw the zoom rectangle
|
|
sgl.disable_texture()
|
|
|
|
bw_old := bw
|
|
bh_old := bh
|
|
bw /= app.scale
|
|
bh /= app.scale
|
|
bx += (bw_old - bw) / 2 - (tr_x / 8) / app.scale
|
|
by += (bh_old - bh) / 2 - ((tr_y / 8) / app.scale) * ratio
|
|
|
|
c = [byte(255),255,0]! // yellow
|
|
sgl.begin_line_strip()
|
|
sgl.v2f_c3b(bx , by , c[0], c[1], c[2])
|
|
sgl.v2f_c3b(bx + bw, by , c[0], c[1], c[2])
|
|
sgl.v2f_c3b(bx + bw, by + bh, c[0], c[1], c[2])
|
|
sgl.v2f_c3b(bx , by + bh, c[0], c[1], c[2])
|
|
sgl.v2f_c3b(bx , by , c[0], c[1], c[2])
|
|
sgl.end()
|
|
}
|
|
*/
|
|
sgl.disable_texture()
|
|
|
|
//
|
|
// Draw info text
|
|
//
|
|
x := 10
|
|
y := 10
|
|
|
|
app.gg.begin()
|
|
|
|
if app.state in [.scanning, .loading] {
|
|
if app.state == .scanning {
|
|
draw_text(mut app, text_scanning, x, y, 20)
|
|
} else {
|
|
draw_text(mut app, text_loading, x, y, 20)
|
|
}
|
|
} else if app.state == .show {
|
|
// print the info text if needed
|
|
if app.item_list.n_item > 0 && app.show_info_flag == true {
|
|
/*
|
|
// waiting for better autofree
|
|
num := app.item_list.lst[app.item_list.item_index].n_item
|
|
of_num := app.item_list.n_item
|
|
x_screen := int(w*2*app.scale*dw)
|
|
y_screen := int(h*2*app.scale*dw)
|
|
rotation_angle := 90 * rotation
|
|
scale_str := "${app.scale:.2}"
|
|
text := "${num}/${of_num} [${app.img_w},${app.img_h}]=>[${x_screen},${y_screen}] ${app.item_list.lst[app.item_list.item_index].name} scale: ${scale_str} rotation: ${rotation_angle}"
|
|
//text := "${num}/${of_num}"
|
|
draw_text(mut app, text, 10, 10, 20)
|
|
unsafe{
|
|
text.free()
|
|
}
|
|
*/
|
|
|
|
// Using string builder to avoid memory leak
|
|
num := app.item_list.lst[app.item_list.item_index].n_item
|
|
of_num := app.item_list.n_item
|
|
x_screen := int(w * 2 * app.scale * dw)
|
|
y_screen := int(h * 2 * app.scale * dw)
|
|
rotation_angle := 90 * rotation
|
|
scale_str := '${app.scale:.2}'
|
|
app.bl.clear()
|
|
app.bl.write_string('$num/$of_num')
|
|
app.bl.write_string(' [${app.img_w}x$app.img_h]=>[${x_screen}x$y_screen]')
|
|
app.bl.write_string(' ${app.item_list.lst[app.item_list.item_index].name}')
|
|
app.bl.write_string(' scale: $scale_str rotation: $rotation_angle')
|
|
draw_text(mut app, app.bl.str(), 10, 10, 20)
|
|
} else {
|
|
if app.item_list.n_item <= 0 {
|
|
draw_text(mut app, text_drop_files, 10, 10, 20)
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// Draw Help text
|
|
//
|
|
if app.show_help_flag == true {
|
|
mut txt_y := 30
|
|
for r in help_text_rows {
|
|
draw_text(mut app, r, 10, txt_y, 20)
|
|
txt_y += 20
|
|
}
|
|
}
|
|
|
|
app.gg.end()
|
|
app.frame_count++
|
|
}
|
|
|
|
// draw readable text
|
|
fn draw_text(mut app App, in_txt string, in_x int, in_y int, fnt_sz f32) {
|
|
scale := app.gg.scale
|
|
font_size := int(fnt_sz * scale)
|
|
|
|
mut txt_conf_c0 := gx.TextCfg{
|
|
color: gx.white // gx.rgb( (c >> 16) & 0xff, (c >> 8) & 0xff, c & 0xff)
|
|
align: .left
|
|
size: font_size
|
|
}
|
|
mut txt_conf_c1 := gx.TextCfg{
|
|
color: gx.black // gx.rgb( (c >> 16) & 0xff, (c >> 8) & 0xff, c & 0xff)
|
|
align: .left
|
|
size: font_size
|
|
}
|
|
|
|
x := int(in_x * scale)
|
|
y := int(in_y * scale)
|
|
app.gg.draw_text(x + 2, y + 2, in_txt, txt_conf_c0)
|
|
app.gg.draw_text(x, y, in_txt, txt_conf_c1)
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* events management
|
|
*
|
|
******************************************************************************/
|
|
fn clear_modifier_params(mut app App) {
|
|
app.scale = 1.0
|
|
|
|
app.sc_flag = false
|
|
app.sc_x = 0
|
|
app.sc_y = 0
|
|
app.last_sc_x = 0
|
|
app.last_sc_y = 0
|
|
|
|
app.tr_flag = false
|
|
app.tr_x = 0
|
|
app.tr_y = 0
|
|
app.last_tr_x = 0
|
|
app.last_tr_y = 0
|
|
}
|
|
|
|
fn my_event_manager(mut ev gg.Event, mut app App) {
|
|
// navigation using the mouse wheel
|
|
app.scroll_y = int(ev.scroll_y)
|
|
if app.scroll_y != 0 {
|
|
inc := int(-1 * app.scroll_y / 4)
|
|
if app.item_list.n_item > 0 {
|
|
app.item_list.get_next_item(inc)
|
|
load_image(mut app)
|
|
}
|
|
}
|
|
|
|
if ev.typ == .mouse_move {
|
|
app.mouse_x = int(ev.mouse_x)
|
|
app.mouse_y = int(ev.mouse_y)
|
|
}
|
|
if ev.typ == .touches_began || ev.typ == .touches_moved {
|
|
if ev.num_touches > 0 {
|
|
touch_point := ev.touches[0]
|
|
app.mouse_x = int(touch_point.pos_x)
|
|
app.mouse_y = int(touch_point.pos_y)
|
|
}
|
|
}
|
|
|
|
// clear all parameters
|
|
if ev.typ == .mouse_down && ev.mouse_button == .middle {
|
|
clear_modifier_params(mut app)
|
|
}
|
|
|
|
// ws := gg.window_size_real_pixels()
|
|
// ratio := f32(ws.width) / ws.height
|
|
// dw := ws.width
|
|
// dh := ws.height
|
|
|
|
// --- translate ---
|
|
if ev.typ == .mouse_down && ev.mouse_button == .left {
|
|
app.tr_flag = true
|
|
app.last_tr_x = app.mouse_x
|
|
app.last_tr_y = app.mouse_y
|
|
}
|
|
if ev.typ == .mouse_up && ev.mouse_button == .left && app.tr_flag == true {
|
|
app.tr_flag = false
|
|
}
|
|
if ev.typ == .mouse_move && app.tr_flag == true {
|
|
app.tr_x += (app.mouse_x - app.last_tr_x) * 3 * app.gg.scale
|
|
app.tr_y += (app.mouse_y - app.last_tr_y) * 3 * app.gg.scale
|
|
app.last_tr_x = app.mouse_x
|
|
app.last_tr_y = app.mouse_y
|
|
// println("Translate: ${app.tr_x} ${app.tr_y}")
|
|
}
|
|
|
|
// --- scaling ---
|
|
if ev.typ == .mouse_down && ev.mouse_button == .right && app.sc_flag == false {
|
|
app.sc_flag = true
|
|
app.last_sc_x = app.mouse_x
|
|
app.last_sc_y = app.mouse_y
|
|
}
|
|
if ev.typ == .mouse_up && ev.mouse_button == .right && app.sc_flag == true {
|
|
app.sc_flag = false
|
|
}
|
|
if ev.typ == .mouse_move && app.sc_flag == true {
|
|
app.sc_x = app.mouse_x - app.last_sc_x
|
|
app.sc_y = app.mouse_y - app.last_sc_y
|
|
app.last_sc_x = app.mouse_x
|
|
app.last_sc_y = app.mouse_y
|
|
|
|
app.scale += f32(app.sc_x / 100)
|
|
if app.scale < 0.1 {
|
|
app.scale = 0.1
|
|
}
|
|
if app.scale > 32 {
|
|
app.scale = 32
|
|
}
|
|
}
|
|
|
|
if ev.typ == .key_down {
|
|
// println(ev.key_code)
|
|
|
|
// Exit using the ESC key or Q key
|
|
if ev.key_code == .escape || ev.key_code == .q {
|
|
cleanup(mut app)
|
|
exit(0)
|
|
}
|
|
// Toggle info text OSD
|
|
if ev.key_code == .i {
|
|
app.show_info_flag = !app.show_info_flag
|
|
}
|
|
// Toggle help text
|
|
if ev.key_code == .h {
|
|
app.show_help_flag = !app.show_help_flag
|
|
}
|
|
|
|
// do actions only if there are items in the list
|
|
if app.item_list.loaded == true && app.item_list.n_item > 0 {
|
|
// show previous image
|
|
if ev.key_code == .left {
|
|
app.item_list.get_next_item(-1)
|
|
load_image(mut app)
|
|
}
|
|
// show next image
|
|
if ev.key_code == .right {
|
|
app.item_list.get_next_item(1)
|
|
load_image(mut app)
|
|
}
|
|
|
|
// jump to the next container if possible
|
|
if ev.key_code == .up {
|
|
app.item_list.go_to_next_container(1)
|
|
load_image(mut app)
|
|
}
|
|
// jump to the previous container if possible
|
|
if ev.key_code == .down {
|
|
app.item_list.go_to_next_container(-1)
|
|
load_image(mut app)
|
|
}
|
|
|
|
// rotate the image
|
|
if ev.key_code == .r {
|
|
app.item_list.rotate(1)
|
|
}
|
|
|
|
// full screen
|
|
if ev.key_code == .f {
|
|
println('Full screen state: $sapp.is_fullscreen()')
|
|
sapp.toggle_fullscreen()
|
|
}
|
|
}
|
|
}
|
|
|
|
// drag&drop
|
|
if ev.typ == .files_droped {
|
|
app.state = .scanning
|
|
// set logo texture during scanning
|
|
show_logo(mut app)
|
|
|
|
num := sapp.get_num_dropped_files()
|
|
mut file_list := []string{}
|
|
for i in 0 .. num {
|
|
file_list << sapp.get_dropped_file_path(i)
|
|
}
|
|
println('Scanning: $file_list')
|
|
app.item_list = &Item_list{}
|
|
app.item_list.loaded = false
|
|
|
|
// load_image(mut app)
|
|
// go app.item_list.get_items_list(file_list)
|
|
|
|
load_and_show(file_list, mut app)
|
|
}
|
|
}
|
|
|
|
fn load_and_show(file_list []string, mut app App) {
|
|
app.item_list.get_items_list(file_list)
|
|
load_image(mut app)
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Main
|
|
*
|
|
******************************************************************************/
|
|
// is needed for easier diagnostics on windows
|
|
[console]
|
|
fn main() {
|
|
// mut font_path := os.resource_abs_path(os.join_path('../assets/fonts/', 'RobotoMono-Regular.ttf'))
|
|
font_name := 'RobotoMono-Regular.ttf'
|
|
font_path := os.join_path(os.temp_dir(), font_name)
|
|
println('Temporary path for the font file: [$font_path]')
|
|
|
|
// if the font doesn't exist create it from the ebedded one
|
|
if os.exists(font_path) == false {
|
|
println('Write font [$font_name] in temp folder.')
|
|
embedded_file := $embed_file('../assets/fonts/RobotoMono-Regular.ttf')
|
|
os.write_file(font_path, embedded_file.to_string()) or {
|
|
eprintln('ERROR: not able to write font file to [$font_path]')
|
|
exit(1)
|
|
}
|
|
}
|
|
|
|
// logo image
|
|
logo_name := 'logo.png'
|
|
logo_path := os.join_path(os.temp_dir(), logo_name)
|
|
println('Temporary path for the logo: [$logo_path]')
|
|
// if the logo doesn't exist create it from the ebedded one
|
|
if os.exists(logo_path) == false {
|
|
println('Write logo [$logo_name] in temp folder.')
|
|
embedded_file := $embed_file('../assets/logo.png')
|
|
os.write_file(logo_path, embedded_file.to_string()) or {
|
|
eprintln('ERROR: not able to write logo file to [$logo_path]')
|
|
exit(1)
|
|
}
|
|
}
|
|
|
|
// App init
|
|
mut app := &App{
|
|
gg: 0
|
|
// zip fields
|
|
zip: 0
|
|
item_list: 0
|
|
}
|
|
|
|
app.state = .scanning
|
|
app.logo_path = logo_path
|
|
app.font_path = font_path
|
|
|
|
// Scan all the arguments to find images
|
|
app.item_list = &Item_list{}
|
|
// app.item_list.get_items_list(os.args[1..])
|
|
load_and_show(os.args[1..], mut app)
|
|
|
|
app.gg = gg.new_context(
|
|
width: win_width
|
|
height: win_height
|
|
create_window: true
|
|
window_title: 'V Image viewer 0.8'
|
|
user_data: app
|
|
bg_color: bg_color
|
|
frame_fn: frame
|
|
init_fn: app_init
|
|
cleanup_fn: cleanup
|
|
event_fn: my_event_manager
|
|
font_path: font_path
|
|
enable_dragndrop: true
|
|
max_dropped_files: 64
|
|
max_dropped_file_path_length: 2048
|
|
// ui_mode: true
|
|
)
|
|
|
|
app.gg.run()
|
|
}
|