Make rusttype optional for vesad

drivers/vesad/src/display.rs

@@ -1,39 +1,64 @@
+#[cfg(feature="rusttype")]
 extern crate rusttype;
 
 use std::cmp;
 
-use primitive::{fast_set32, fast_set64, fast_copy64};
+use primitive::{fast_set32, fast_set64, fast_copy, fast_copy64};
 
+#[cfg(feature="rusttype")]
 use self::rusttype::{Font, FontCollection, Scale, point};
 
-static FONT: &'static [u8] = include_bytes!("../../../res/fonts/DejaVuSansMono.ttf");
+#[cfg(not(feature="rusttype"))]
-static FONT_BOLD: &'static [u8] = include_bytes!("../../../res/fonts/DejaVuSansMono-Bold.ttf");
+static FONT: &'static [u8] = include_bytes!("../../../res/fonts/unifont.font");
-static FONT_BOLD_ITALIC: &'static [u8] = include_bytes!("../../../res/fonts/DejaVuSansMono-BoldOblique.ttf");
-static FONT_ITALIC: &'static [u8] = include_bytes!("../../../res/fonts/DejaVuSansMono-Oblique.ttf");
 
 /// A display
+#[cfg(not(feature="rusttype"))]
+pub struct Display {
+    pub width: usize,
+    pub height: usize,
+    pub onscreen: &'static mut [u32],
+    pub offscreen: &'static mut [u32]
+}
+
+/// A display
+#[cfg(feature="rusttype")]
 pub struct Display {
     pub width: usize,
     pub height: usize,
     pub onscreen: &'static mut [u32],
     pub offscreen: &'static mut [u32],
+    #[cfg(feature="rusttype")]
     pub font: Font<'static>,
+    #[cfg(feature="rusttype")]
     pub font_bold: Font<'static>,
+    #[cfg(feature="rusttype")]
     pub font_bold_italic: Font<'static>,
+    #[cfg(feature="rusttype")]
     pub font_italic: Font<'static>
 }
 
 impl Display {
+    #[cfg(not(feature="rusttype"))]
+    pub fn new(width: usize, height: usize, onscreen: &'static mut [u32], offscreen: &'static mut [u32]) -> Display {
+        Display {
+            width: width,
+            height: height,
+            onscreen: onscreen,
+            offscreen: offscreen
+        }
+    }
+
+    #[cfg(feature="rusttype")]
     pub fn new(width: usize, height: usize, onscreen: &'static mut [u32], offscreen: &'static mut [u32]) -> Display {
         Display {
             width: width,
             height: height,
             onscreen: onscreen,
             offscreen: offscreen,
-            font: FontCollection::from_bytes(FONT).into_font().unwrap(),
+            font: FontCollection::from_bytes(include_bytes!("../../../res/fonts/DejaVuSansMono.ttf")).into_font().unwrap(),
-            font_bold: FontCollection::from_bytes(FONT_BOLD).into_font().unwrap(),
+            font_bold: FontCollection::from_bytes(include_bytes!("../../../res/fonts/DejaVuSansMono-Bold.ttf")).into_font().unwrap(),
-            font_bold_italic: FontCollection::from_bytes(FONT_BOLD_ITALIC).into_font().unwrap(),
+            font_bold_italic: FontCollection::from_bytes(include_bytes!("../../../res/fonts/DejaVuSansMono-BoldOblique.ttf")).into_font().unwrap(),
-            font_italic: FontCollection::from_bytes(FONT_ITALIC).into_font().unwrap()
+            font_italic: FontCollection::from_bytes(include_bytes!("../../../res/fonts/DejaVuSansMono-Oblique.ttf")).into_font().unwrap()
         }
     }
 
@@ -46,32 +71,49 @@ impl Display {
         let len = cmp::min(self.width, x + w) - start_x;
 
         let mut offscreen_ptr = self.offscreen.as_mut_ptr() as usize;
-        let mut onscreen_ptr = self.onscreen.as_mut_ptr() as usize;
 
         let stride = self.width * 4;
 
         let offset = y * stride + start_x * 4;
         offscreen_ptr += offset;
-        onscreen_ptr += offset;
 
         let mut rows = end_y - start_y;
         while rows > 0 {
             unsafe {
                 fast_set32(offscreen_ptr as *mut u32, color, len);
-                fast_set32(onscreen_ptr as *mut u32, color, len);
             }
             offscreen_ptr += stride;
-            onscreen_ptr += stride;
             rows -= 1;
         }
     }
 
     /// Draw a character
+    #[cfg(not(feature="rusttype"))]
+    pub fn char(&mut self, x: usize, y: usize, character: char, color: u32, _bold: bool, _italic: bool) {
+        if x + 8 <= self.width && y + 16 <= self.height {
+            let mut dst = unsafe { self.offscreen.as_mut_ptr().offset((y * self.width + x) as isize) };
+
+            let font_i = 16 * (character as usize);
+            if font_i + 16 <= FONT.len() {
+                for row in 0..16 {
+                    let row_data = FONT[font_i + row];
+                    for col in 0..8 {
+                        if (row_data >> (7 - col)) & 1 == 1 {
+                            unsafe { *dst.offset(col) = color; }
+                        }
+                    }
+                    dst = unsafe { dst.offset(self.width as isize) };
+                }
+            }
+        }
+    }
+
+    /// Draw a character
+    #[cfg(feature="rusttype")]
     pub fn char(&mut self, x: usize, y: usize, character: char, color: u32, bold: bool, italic: bool) {
         let width = self.width;
         let height = self.height;
-        let offscreen = self.offscreen.as_mut_ptr();
+        let offscreen = self.offscreen.as_mut_ptr() as usize;
-        let onscreen = self.onscreen.as_mut_ptr();
 
         let font = if bold && italic {
             &self.font_bold_italic
@@ -100,9 +142,9 @@ impl Display {
                             let f_g = (((color >> 8) & 0xFF) * f_a)/255;
                             let f_b = ((color & 0xFF) * f_a)/255;
 
-                            let index = (off_y * width + off_x) as isize;
+                            let offscreen_ptr = (offscreen + (off_y * width + off_x) * 4) as *mut u32;
 
-                            let bg = unsafe { *offscreen.offset(index) };
+                            let bg = unsafe { *offscreen_ptr };
 
                             let b_a = 255 - f_a;
                             let b_r = (((bg >> 16) & 0xFF) * b_a)/255;
@@ -111,8 +153,7 @@ impl Display {
 
                             let c = ((f_r + b_r) << 16) | ((f_g + b_g) << 8) | (f_b + b_b);
 
-                            unsafe { *offscreen.offset(index) = c; }
+                            unsafe { *offscreen_ptr = c; }
-                            unsafe { *onscreen.offset(index) = c; }
                         }
                     }
                 });
@@ -133,9 +174,35 @@ impl Display {
                 let data_ptr = self.offscreen.as_mut_ptr() as *mut u64;
                 fast_copy64(data_ptr, data_ptr.offset(off1 as isize), off2);
                 fast_set64(data_ptr.offset(off2 as isize), data, off1);
-
-                fast_copy64(self.onscreen.as_mut_ptr() as *mut u64, data_ptr, off1 + off2);
             }
         }
     }
+
+    /// Copy from offscreen to onscreen
+    pub fn sync(&mut self, x: usize, y: usize, w: usize, h: usize) {
+        let start_y = cmp::min(self.height - 1, y);
+        let end_y = cmp::min(self.height, y + h);
+
+        let start_x = cmp::min(self.width - 1, x);
+        let len = (cmp::min(self.width, x + w) - start_x) * 4;
+
+        let mut offscreen_ptr = self.offscreen.as_mut_ptr() as usize;
+        let mut onscreen_ptr = self.onscreen.as_mut_ptr() as usize;
+
+        let stride = self.width * 4;
+
+        let offset = y * stride + start_x * 4;
+        offscreen_ptr += offset;
+        onscreen_ptr += offset;
+
+        let mut rows = end_y - start_y;
+        while rows > 0 {
+            unsafe {
+                fast_copy(onscreen_ptr as *mut u8, offscreen_ptr as *const u8, len);
+            }
+            offscreen_ptr += stride;
+            onscreen_ptr += stride;
+            rows -= 1;
+        }
+    }
 }

drivers/vesad/src/main.rs

@@ -8,7 +8,7 @@ extern crate ransid;
 extern crate syscall;
 
 use std::cell::RefCell;
-use std::collections::VecDeque;
+use std::collections::{BTreeSet, VecDeque};
 use std::fs::File;
 use std::io::{Read, Write};
 use std::{slice, thread};
@@ -26,11 +26,49 @@ pub mod primitive;
 struct DisplayScheme {
     console: RefCell<Console>,
     display: RefCell<Display>,
+    changed: RefCell<BTreeSet<usize>>,
     input: RefCell<VecDeque<u8>>,
     cooked: RefCell<VecDeque<u8>>,
     requested: RefCell<usize>
 }
 
+impl DisplayScheme {
+    fn event(&self, event: Event) {
+        let mut display = self.display.borrow_mut();
+        let mut changed = self.changed.borrow_mut();
+
+        match event {
+            Event::Char { x, y, c, color, bold, .. } => {
+                display.char(x * 8, y * 16, c, color.data, bold, false);
+                changed.insert(y);
+            },
+            Event::Rect { x, y, w, h, color } => {
+                display.rect(x * 8, y * 16, w * 8, h * 16, color.data);
+                for y2 in y..y + h {
+                    changed.insert(y2);
+                }
+            },
+            Event::Scroll { rows, color } => {
+                display.scroll(rows * 16, color.data);
+                for y in 0..display.height/16 {
+                    changed.insert(y);
+                }
+            }
+        }
+    }
+
+    fn sync(&self) {
+        let mut display = self.display.borrow_mut();
+        let mut changed = self.changed.borrow_mut();
+
+        let width = display.width;
+        for change in changed.iter() {
+            display.sync(0, change * 16, width, 16);
+        }
+        changed.clear();
+    }
+}
+
 impl Scheme for DisplayScheme {
     fn open(&self, path: &[u8], _flags: usize) -> Result<usize> {
         if path == b"input" {
@@ -50,7 +88,32 @@ impl Scheme for DisplayScheme {
         Ok(0)
     }
 
-    fn fsync(&self, _id: usize) -> Result<usize> {
+    fn fpath(&self, id: usize, buf: &mut [u8]) -> Result<usize> {
+        let path_str = if id == 1 {
+            format!("display:input")
+        } else {
+            let console = self.console.borrow();
+            format!("display:{}/{}", console.w, console.h)
+        };
+
+        let path = path_str.as_bytes();
+
+        let mut i = 0;
+        while i < buf.len() && i < path.len() {
+            buf[i] = path[i];
+            i += 1;
+        }
+
+        Ok(i)
+    }
+
+    fn fsync(&self, id: usize) -> Result<usize> {
+        if id == 1 {
+
+        } else {
+            self.sync();
+        }
+
         Ok(0)
     }
 
@@ -74,7 +137,7 @@ impl Scheme for DisplayScheme {
                 for &b in buf.iter() {
                     match b {
                         b'\x08' | b'\x7F' => {
-                            if let Some(c) = self.cooked.borrow_mut().pop_back() {
+                            if let Some(_c) = self.cooked.borrow_mut().pop_back() {
                                 self.write(0, b"\x08")?;
                             }
                         },
@@ -94,44 +157,35 @@ impl Scheme for DisplayScheme {
             }
             Ok(buf.len())
         } else {
-            let mut display = self.display.borrow_mut();
             let mut console = self.console.borrow_mut();
             if console.cursor && console.x < console.w && console.y < console.h {
-                display.rect(console.x * 8, console.y * 16, 8, 16, 0);
+                self.event(Event::Rect {
+                    x: console.x,
+                    y: console.y,
+                    w: 1,
+                    h: 1,
+                    color: console.background
+                });
             }
             console.write(buf, |event| {
-                match event {
+                self.event(event);
-                    Event::Char { x, y, c, color, bold, .. } => display.char(x * 8, y * 16, c, color.data, bold, false),
-                    Event::Rect { x, y, w, h, color } => display.rect(x * 8, y * 16, w * 8, h * 16, color.data),
-                    Event::Scroll { rows, color } => display.scroll(rows * 16, color.data)
-                }
             });
             if console.cursor && console.x < console.w && console.y < console.h {
-                display.rect(console.x * 8, console.y * 16, 8, 16, 0xFFFFFF);
+                self.event(Event::Rect {
+                    x: console.x,
+                    y: console.y,
+                    w: 1,
+                    h: 1,
+                    color: console.foreground
+                });
+            }
+            if ! console.raw_mode {
+                self.sync();
             }
             Ok(buf.len())
         }
     }
 
-    fn fpath(&self, id: usize, buf: &mut [u8]) -> Result<usize> {
-        let path_str = if id == 1 {
-            format!("display:input")
-        } else {
-            let console = self.console.borrow();
-            format!("display:{}/{}", console.w, console.h)
-        };
-
-        let path = path_str.as_bytes();
-
-        let mut i = 0;
-        while i < buf.len() && i < path.len() {
-            buf[i] = path[i];
-            i += 1;
-        }
-
-        Ok(i)
-    }
-
     fn close(&self, _id: usize) -> Result<usize> {
         Ok(0)
     }
@@ -170,6 +224,7 @@ fn main() {
                     unsafe { slice::from_raw_parts_mut(onscreen as *mut u32, size) },
                     unsafe { slice::from_raw_parts_mut(offscreen as *mut u32, size) }
                 )),
+                changed: RefCell::new(BTreeSet::new()),
                 input: RefCell::new(VecDeque::new()),
                 cooked: RefCell::new(VecDeque::new()),
                 requested: RefCell::new(0)

res/fonts/unifont-license.txt

@@ -0,0 +1,371 @@
+LICENSE
+-------
+The source code for everything except the compiled fonts in this current
+release is licensed as follows:
+
+     License for this current distribution of program source
+     files (i.e., everything except the fonts) is released under
+     the terms of the GNU General Public License version 2,
+     or (at your option) a later version.
+
+     See the section below for a copy of the GNU General Public License
+     version 2.
+
+The license for the compiled fonts is covered by the above GPL terms
+with the GNU font embedding exception, as follows:
+
+     As a special exception, if you create a document which uses this font,
+     and embed this font or unaltered portions of this font into the document,
+     this font does not by itself cause the resulting document to be covered
+     by the GNU General Public License. This exception does not however
+     invalidate any other reasons why the document might be covered by the
+     GNU General Public License. If you modify this font, you may extend
+     this exception to your version of the font, but you are not obligated
+     to do so. If you do not wish to do so, delete this exception statement
+     from your version. 
+
+See "http://www.gnu.org/licenses/gpl-faq.html#FontException" for more details.
+
+
+GPL VERSION 2
+-------------
+
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
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+License is intended to guarantee your freedom to share and change free
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+General Public License applies to most of the Free Software
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+using it.  (Some other Free Software Foundation software is covered by
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+your programs, too.
+
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+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
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+a notice placed by the copyright holder saying it may be distributed
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+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+                            NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.