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use winapi::shared::minwindef::{HINSTANCE, HRSRC, HGLOBAL};
use winapi::um::winuser::{LoadImageW, LR_DEFAULTSIZE, LR_CREATEDIBSECTION};
use winapi::ctypes::c_void;
use crate::win32::base_helper::{to_utf16, from_utf16};
use crate::NwgError;
use super::{Icon, Bitmap, Cursor};
use std::{ptr, slice};
#[derive(Copy, Clone, Debug)]
pub enum RawResourceType {
Cursor,
Bitmap,
Icon,
Menu,
Dialog,
String,
FontDir,
Font,
Accelerator,
RawData,
MessageTable,
Version,
DlgInclude,
PlugPlay,
Vxd,
AnimatedCursor,
AnimatedIcon,
Html,
Manifest,
Other(&'static str)
}
pub struct RawResource {
module: HINSTANCE,
handle: HRSRC,
data_handle: HGLOBAL,
ty: RawResourceType,
}
impl RawResource {
pub fn handle(&self) -> HRSRC {
self.handle
}
pub fn data_handle(&self) -> HGLOBAL {
self.data_handle
}
pub fn resource_type(&self) -> RawResourceType {
self.ty
}
pub fn len(&self) -> usize {
use winapi::um::libloaderapi::SizeofResource;
unsafe {
SizeofResource(self.module, self.handle) as usize
}
}
pub unsafe fn as_mut_ptr(&mut self) -> *mut c_void {
self.lock()
}
pub unsafe fn as_mut_slice(&self) -> &mut [u8] {
std::slice::from_raw_parts_mut(self.lock() as *mut u8, self.len())
}
fn lock(&self) -> *mut c_void {
use winapi::um::libloaderapi::LockResource;
unsafe { LockResource(self.data_handle) }
}
}
pub struct EmbedResource {
pub hinst: HINSTANCE,
}
impl EmbedResource {
pub fn load(name: Option<&str>) -> Result<EmbedResource, NwgError> {
let mut embed = EmbedResource::default();
EmbedResource::builder()
.module(name)
.build(&mut embed)?;
Ok(embed)
}
pub fn builder() -> EmbedResourceBuilder {
EmbedResourceBuilder {
module: None
}
}
pub fn string(&self, id: u32) -> Option<String> {
use winapi::um::libloaderapi::LoadStringW;
unsafe {
let mut str_ptr = ptr::null_mut();
let ccount = LoadStringW(self.hinst, id, (&mut str_ptr) as *mut *mut u16 as _, 0);
match ccount {
0 => None,
count => {
let str_slice = slice::from_raw_parts(str_ptr, count as usize);
Some(from_utf16(str_slice))
}
}
}
}
pub fn icon(&self, id: usize, size: Option<(u32, u32)>) -> Option<Icon> {
use winapi::um::winuser::IMAGE_ICON;
unsafe {
let id_rc = id as _;
let icon = match size {
None => LoadImageW(self.hinst, id_rc, IMAGE_ICON, 0, 0, LR_DEFAULTSIZE),
Some((w, h)) => LoadImageW(self.hinst, id_rc, IMAGE_ICON, w as _, h as _, 0),
};
if icon.is_null() {
None
} else {
Some(Icon { handle: icon as _, owned: true } )
}
}
}
pub fn icon_str(&self, id: &str, size: Option<(u32, u32)>) -> Option<Icon> {
let name = to_utf16(id);
self.icon(name.as_ptr() as usize, size)
}
pub fn bitmap(&self, id: usize, size: Option<(u32, u32)>) -> Option<Bitmap> {
use winapi::um::winuser::IMAGE_BITMAP;
unsafe {
let id_rc = id as _;
let bitmap = match size {
None => LoadImageW(self.hinst, id_rc, IMAGE_BITMAP, 0, 0, LR_DEFAULTSIZE),
Some((w, h)) => LoadImageW(self.hinst, id_rc, IMAGE_BITMAP, w as _, h as _, LR_CREATEDIBSECTION),
};
if bitmap.is_null() {
None
} else {
Some(Bitmap { handle: bitmap as _, owned: true } )
}
}
}
pub fn bitmap_str(&self, id: &str, size: Option<(u32, u32)>) -> Option<Bitmap> {
let name = to_utf16(id);
self.bitmap(name.as_ptr() as usize, size)
}
#[cfg(feature="image-decoder")]
pub fn image(&self, id: usize, size: Option<(u32, u32)>) -> Option<Bitmap> {
use crate::win32::resources_helper as rh;
match self.raw(id, RawResourceType::Other("Image")) {
None => None,
Some(raw) => {
let src = unsafe { raw.as_mut_slice() };
let handle = unsafe { rh::build_image_decoder_from_memory(src, size) };
match handle {
Ok(handle) => Some(Bitmap { handle, owned: true }),
Err(e) => {
println!("{:?}", e);
None
}
}
}
}
}
#[cfg(feature="image-decoder")]
pub fn image_str(&self, id: &str, size: Option<(u32, u32)>) -> Option<Bitmap> {
let name = to_utf16(id);
self.image(name.as_ptr() as usize, size)
}
pub fn cursor(&self, id: usize) -> Option<Cursor> {
use winapi::um::winuser::IMAGE_CURSOR;
unsafe {
let id_rc = id as _;
let cursor = LoadImageW(self.hinst, id_rc, IMAGE_CURSOR, 0, 0, LR_DEFAULTSIZE);
if cursor.is_null() {
None
} else {
Some(Cursor { handle: cursor as _, owned: true } )
}
}
}
pub fn cursor_str(&self, id: &str) -> Option<Cursor> {
let name = to_utf16(id);
self.cursor(name.as_ptr() as usize)
}
pub fn raw(&self, id: usize, ty: RawResourceType) -> Option<RawResource> {
use winapi::um::libloaderapi::{FindResourceW, LoadResource};
use RawResourceType::*;
unsafe {
let data_u16;
let ty_value = match ty {
Cursor => 1,
Bitmap => 2,
Icon => 3,
Menu => 4,
Dialog => 5,
String => 6,
FontDir => 7,
Font => 8,
Accelerator => 9,
RawData => 10,
MessageTable => 11,
Version => 16,
DlgInclude => 17,
PlugPlay => 19,
Vxd => 20,
AnimatedCursor => 21,
AnimatedIcon => 22,
Html => 23,
Manifest => 24,
Other(value) => {
data_u16 = Some(to_utf16(value));
data_u16.as_ref().map(|v| v.as_ptr() as usize).unwrap()
}
};
let handle = FindResourceW(self.hinst as _, id as _, ty_value as _);
if handle.is_null() {
return None;
}
let data_handle = LoadResource(self.hinst as _, handle);
Some(RawResource {
module: self.hinst,
handle,
data_handle,
ty
})
}
}
pub fn raw_str(&self, id: &str, ty: RawResourceType) -> Option<RawResource> {
let name = to_utf16(id);
self.raw(name.as_ptr() as usize, ty)
}
}
impl Default for EmbedResource {
fn default() -> EmbedResource {
EmbedResource {
hinst: ptr::null_mut()
}
}
}
pub struct EmbedResourceBuilder {
module: Option<String>
}
impl EmbedResourceBuilder {
pub fn module(mut self, module: Option<&str>) -> EmbedResourceBuilder {
self.module = module.map(|s| s.to_string());
self
}
pub fn build(self, out: &mut EmbedResource) -> Result<(), NwgError> {
use winapi::um::libloaderapi::GetModuleHandleW;
let hinst = match self.module.as_ref() {
Some(name) => {
let name = to_utf16(name);
unsafe { GetModuleHandleW(name.as_ptr()) as HINSTANCE }
},
None => unsafe { GetModuleHandleW(ptr::null_mut()) as HINSTANCE }
};
if hinst.is_null() {
let name = self.module.as_ref().map(|name| name as &str ).unwrap_or("");
return Err(NwgError::resource_create(format!("No module named \"{}\" in application", name)));
}
*out = EmbedResource {
hinst
};
Ok(())
}
}