1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169

use std::ptr;
use std::sync::Arc;
use winapi::*;
use comptr::ComPtr;
use load_dll;
use error::D2D1Error;
use helpers::{GetRaw, FromRaw};
use render_target::{RenderTarget, RenderTargetBacking};
use geometry;
use stroke_style;
use math;

#[derive(Clone, Debug, PartialEq)]
pub struct Factory {
    ptr: ComPtr<ID2D1Factory>,
}

impl GetRaw for Factory {
    type Raw = ID2D1Factory;
    unsafe fn get_raw(&self) -> *mut ID2D1Factory {
        self.ptr.raw_value()
    }
}

impl Factory {
    pub unsafe fn from_ptr(ptr: ComPtr<ID2D1Factory>) -> Factory {
        Factory { ptr: ptr }
    }

    pub fn new() -> Result<Factory, D2D1Error> {
        let d2d1 = match load_dll::D2D1::load() {
            Ok(d2d1) => Arc::new(d2d1),
            Err(_) => return Err(D2D1Error::MissingLibrary),
        };

        let mut ptr: ComPtr<ID2D1Factory> = ComPtr::new();
        unsafe {
            let hr =
                d2d1.create_factory(D2D1_FACTORY_TYPE_MULTI_THREADED,
                                    &ptr.iid(),
                                    &D2D1_FACTORY_OPTIONS { debugLevel: D2D1_DEBUG_LEVEL_WARNING },
                                    ptr.raw_void());

            if !SUCCEEDED(hr) {
                return Err(From::from(hr));
            }
        }

        Ok(Factory { ptr: ptr })
    }

    pub fn create_rectangle_geometry(&self,
                                     rectangle: &math::RectF)
                                     -> Result<geometry::Rectangle, D2D1Error> {
        unsafe {
            let mut ptr: ComPtr<ID2D1RectangleGeometry> = ComPtr::new();
            let result = (*self.ptr.raw_value())
                .CreateRectangleGeometry(&rectangle.0, ptr.raw_addr());

            if SUCCEEDED(result) {
                Ok(FromRaw::from_raw(ptr.raw_value()))
            } else {
                Err(From::from(result))
            }
        }
    }

    pub fn create_rounded_rectangle_geometry(&self,
                                             rounded_rectangle: &math::RoundedRect)
                                             -> Result<geometry::RoundedRectangle, D2D1Error> {
        unsafe {
            let mut ptr: ComPtr<ID2D1RoundedRectangleGeometry> = ComPtr::new();
            let result = (*self.ptr.raw_value())
                .CreateRoundedRectangleGeometry(&rounded_rectangle.0, ptr.raw_addr());

            if SUCCEEDED(result) {
                Ok(FromRaw::from_raw(ptr.raw_value()))
            } else {
                Err(From::from(result))
            }
        }
    }

    pub fn create_ellipse_geometry(&self,
                                   ellipse: &math::Ellipse)
                                   -> Result<geometry::Ellipse, D2D1Error> {
        unsafe {
            let mut ptr: ComPtr<ID2D1EllipseGeometry> = ComPtr::new();
            let result = (*self.ptr.raw_value()).CreateEllipseGeometry(&ellipse.0, ptr.raw_addr());

            if SUCCEEDED(result) {
                Ok(FromRaw::from_raw(ptr.raw_value()))
            } else {
                Err(From::from(result))
            }
        }
    }

    pub fn create_geometry_group<G: geometry::Geometry>(&self,
                                                        fill_mode: geometry::FillMode,
                                                        geometries: &[G])
                                                        -> Result<geometry::Group, D2D1Error> {
        unsafe {
            let mut ptrs: Vec<_> = geometries.iter().map(|g| g.get_ptr()).collect();
            let mut ptr: ComPtr<ID2D1GeometryGroup> = ComPtr::new();

            let result = (*self.ptr.raw_value())
                .CreateGeometryGroup(D2D1_FILL_MODE(fill_mode as u32),
                                     ptrs.as_mut_ptr(),
                                     ptrs.len() as u32,
                                     ptr.raw_addr());

            if SUCCEEDED(result) {
                Ok(FromRaw::from_raw(ptr.raw_value()))
            } else {
                Err(From::from(result))
            }
        }
    }

    pub fn create_path_geometry(&self) -> Result<geometry::Path, D2D1Error> {
        unsafe {
            let mut ptr: ComPtr<ID2D1PathGeometry> = ComPtr::new();
            let result = (*self.ptr.raw_value()).CreatePathGeometry(ptr.raw_addr());

            if SUCCEEDED(result) {
                Ok(FromRaw::from_raw(ptr.raw_value()))
            } else {
                Err(From::from(result))
            }
        }
    }

    pub fn create_stroke_style(&self,
                               props: &stroke_style::StrokeStyleProperties)
                               -> Result<stroke_style::StrokeStyle, D2D1Error> {
        unsafe {
            let mut ptr: ComPtr<ID2D1StrokeStyle> = ComPtr::new();
            let pdata = props.get_d2d1_data();
            let (dashes, dashes_count) = match props.dashes {
                Some(dashes) => (dashes.as_ptr(), dashes.len() as u32),
                None => (ptr::null(), 0),
            };

            let result = (*self.ptr.raw_value())
                .CreateStrokeStyle(&pdata, dashes, dashes_count, ptr.raw_addr());

            if SUCCEEDED(result) {
                Ok(FromRaw::from_raw(ptr.raw_value()))
            } else {
                Err(From::from(result))
            }
        }
    }

    pub fn create_render_target<T: RenderTargetBacking>(&self,
                                                        backing: T)
                                                        -> Result<RenderTarget, D2D1Error> {
        unsafe {
            let factory = &mut *self.ptr.raw_value();
            let rt_ptr = try!(backing.create_target(factory));
            assert!(!rt_ptr.is_null());

            (*rt_ptr).SetTags(0, 0);

            Ok(FromRaw::from_raw(rt_ptr))
        }
    }
}