Add sdlterm prototype: extension module for SDL driver.
--- a/.hgignore Sat Jan 05 00:37:11 2013 +0100
+++ b/.hgignore Sat Jan 05 00:40:27 2013 +0100
@@ -1,9 +1,14 @@
-.*~
-^tuikit/.*\.pyc
+.*~$
+^tuikit/.*\.pyc$
^docs/_build
^tuikit\.log
^build
-\.project
-\.pydevproject
-\.settings
+^sdlterm/build
+^sdlterm/font
+^sdlterm/cython/sdlterm.cpp$
+^sdlterm/demo$
+^\.project
+^\.pydevproject
+^\.settings
.*\.appstats
+__pycache__
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sdlterm/Makefile Sat Jan 05 00:40:27 2013 +0100
@@ -0,0 +1,8 @@
+CXXFLAGS=`sdl-config --cflags` -g -Wall -std=c++11 -Isrc
+LDFLAGS=`sdl-config --libs` -lSDL_ttf
+VPATH=src
+
+demo: demo.cc sdlterm.cc sdlterm.h
+
+clean:
+ rm -f demo
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sdlterm/cython/sdlterm.pyx Sat Jan 05 00:40:27 2013 +0100
@@ -0,0 +1,64 @@
+# distutils: language = c++
+# distutils: sources = src/sdlterm.cc
+# distutils: include_dirs = /usr/include/SDL src
+# distutils: libraries = SDL SDL_ttf
+# distutils: define_macros = _GNU_SOURCE=1 _REENTRANT
+# distutils: extra_compile_args = --std=c++0x
+# cython: language_level=3
+
+from libcpp cimport bool
+
+
+cdef extern from "sdlterm.h":
+ enum EventType:
+ pass
+
+ union Event:
+ EventType type
+
+ cdef cppclass Terminal:
+ Terminal() except +
+
+ void select_font(char *fname_regular, char *fname_bold, int ptsize)
+ void resize(int pxwidth, int pxheight)
+
+ void erase()
+ void putch(int x, int y, Py_UNICODE ch)
+ void commit()
+
+ int prepare_attr(int fg, int bg, int style)
+ void set_attr(int value)
+
+ void set_cursor(int x, int y)
+ void show_cursor(bool visible)
+
+ void get_next_event(Event event)
+
+
+cdef class SDLTerminal:
+ cdef Terminal *thisptr # hold a C++ instance which we're wrapping
+
+ def __cinit__(self):
+ self.thisptr = new Terminal()
+ def __dealloc__(self):
+ del self.thisptr
+
+ def select_font(self, fname_regular, fname_bold, ptsize):
+ fname_regular = fname_regular.encode('utf8')
+ fname_bold = fname_bold.encode('utf8')
+ self.thisptr.select_font(fname_regular, fname_bold, ptsize)
+ def resize(self, width, height):
+ self.thisptr.resize(width, height)
+
+ def erase(self):
+ self.thisptr.erase()
+ def putch(self, x, y, ch):
+ self.thisptr.putch(x, y, ch)
+ def commit(self):
+ self.thisptr.commit()
+
+ def get_next_event(self):
+ cdef Event event
+ self.thisptr.get_next_event(event)
+ return dict()
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sdlterm/demo.cc Sat Jan 05 00:40:27 2013 +0100
@@ -0,0 +1,56 @@
+#include "sdlterm.h"
+
+
+class Application
+{
+public:
+ Terminal term;
+ bool done;
+
+ Application() : term(), done(false) {};
+
+ void init();
+ void wait_and_process_event();
+};
+
+
+void Application::init()
+{
+ term.resize(800, 600);
+ term.select_font("font/DejaVuSansMono.ttf", "font/DejaVuSansMono-Bold.ttf", 12);
+ term.erase();
+ term.putch(5, 5, 'W');
+ term.commit();
+}
+
+
+void Application::wait_and_process_event()
+{
+ Event event;
+ term.get_next_event(event);
+
+ switch (event.type)
+ {
+ case EventType::quit:
+ done = true;
+ break;
+
+ default:
+ break;
+ }
+}
+
+
+int main(int argc, char *argv[])
+{
+ Application app;
+ app.init();
+
+ while (!app.done)
+ {
+ app.wait_and_process_event();
+ }
+
+ return 0;
+}
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sdlterm/demo.py Sat Jan 05 00:40:27 2013 +0100
@@ -0,0 +1,20 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import sys
+sys.path.insert(0, 'build/lib.linux-x86_64-3.2')
+
+from sdlterm import SDLTerminal
+
+if __name__ == '__main__':
+ term = SDLTerminal()
+ term.resize(800, 600)
+ term.select_font("font/DejaVuSansMono.ttf", "font/DejaVuSansMono-Bold.ttf", 12)
+ term.erase()
+ term.putch(5, 5, 'W')
+ term.commit()
+
+ while True:
+ event = term.get_next_event()
+ break
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sdlterm/setup.py Sat Jan 05 00:40:27 2013 +0100
@@ -0,0 +1,7 @@
+from distutils.core import setup
+from Cython.Build import cythonize
+
+setup(
+ ext_modules = cythonize("cython/sdlterm.pyx")
+)
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sdlterm/src/sdlterm.cc Sat Jan 05 00:40:27 2013 +0100
@@ -0,0 +1,251 @@
+#include "sdlterm.h"
+
+#include <stdexcept>
+
+
+GlyphRenderer::GlyphRenderer()
+ : _font_regular(NULL), _font_bold(NULL)
+{
+ if (TTF_Init() == -1)
+ {
+ printf("TTF_Init: %s\n", TTF_GetError());
+ throw std::exception();
+ }
+}
+
+
+GlyphRenderer::~GlyphRenderer()
+{
+ close_font();
+ TTF_Quit();
+}
+
+
+void GlyphRenderer::open_font(const char *fname_regular, const char *fname_bold, int ptsize)
+{
+ close_font();
+
+ // open regular font
+ _font_regular = TTF_OpenFont(fname_regular, ptsize);
+ if (!_font_regular)
+ {
+ printf("TTF_OpenFont: %s\n", TTF_GetError());
+ throw std::exception();
+ }
+
+ // open bold font
+ _font_bold = TTF_OpenFont(fname_bold, ptsize);
+ if (!_font_bold)
+ {
+ printf("TTF_OpenFont: %s\n", TTF_GetError());
+ throw std::exception();
+ }
+
+ // update metrics for regular font
+ int advance;
+ if (TTF_GlyphMetrics(_font_regular, 'M', NULL, NULL, NULL, NULL, &advance) == -1)
+ {
+ printf("TTF_GlyphMetrics: %s\n", TTF_GetError());
+ }
+ _cell_width = advance;
+ _cell_height = TTF_FontHeight(_font_regular);
+
+ // read metrics for bold font
+ if (TTF_GlyphMetrics(_font_bold, 'M', NULL, NULL, NULL, NULL, &advance) == -1)
+ {
+ printf("TTF_GlyphMetrics: %s\n", TTF_GetError());
+ }
+ if (advance > _cell_width)
+ {
+ _cell_width = advance;
+ }
+ int height = TTF_FontHeight(_font_bold);
+ if (height > _cell_height)
+ {
+ _cell_height = height;
+ }
+}
+
+
+void GlyphRenderer::close_font()
+{
+ if (_font_regular)
+ {
+ TTF_CloseFont(_font_regular);
+ _font_regular = NULL;
+ }
+ if (_font_bold)
+ {
+ TTF_CloseFont(_font_bold);
+ _font_bold = NULL;
+ }
+}
+
+
+SDL_Surface *GlyphRenderer::render_glyph(Uint16 ch)
+{
+ TTF_Font *font = _font_regular;
+ SDL_Color color={0xff,0xff,0xff}, bgcolor={0,100,100};
+ if (ch != 'W')
+ {
+ bgcolor.g = 0;
+ bgcolor.b = 0;
+ }
+
+ // create surface for whole cell and fill it with bg color
+ SDL_Surface *cell_surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
+ _cell_width, _cell_height, 32, 0, 0, 0, 0);
+ SDL_Rect dst_rect;
+ dst_rect.x = 0;
+ dst_rect.y = 0;
+ dst_rect.w = _cell_width;
+ dst_rect.h = _cell_height;
+ Uint32 bgcolor_mapped = SDL_MapRGB(cell_surface->format, bgcolor.r, bgcolor.g, bgcolor.b);
+ SDL_FillRect(cell_surface, &dst_rect, bgcolor_mapped);
+
+ // render glyph, blit it onto cell surface
+ SDL_Surface *glyph_surface = TTF_RenderGlyph_Shaded(font, ch, color, bgcolor);
+ int minx, maxy;
+ TTF_GlyphMetrics(font, ch, &minx, NULL, NULL, &maxy, NULL);
+ dst_rect.x = minx;
+ dst_rect.y = TTF_FontAscent(font) - maxy;
+ SDL_BlitSurface(glyph_surface, NULL, cell_surface, &dst_rect);
+ SDL_FreeSurface(glyph_surface);
+
+ return cell_surface;
+}
+
+
+TerminalScreen::~TerminalScreen()
+{
+ if (_cells)
+ {
+ delete[] _cells;
+ }
+}
+
+
+void TerminalScreen::select_font(const char *fname_regular, const char *fname_bold, int ptsize)
+{
+ _render.open_font(fname_regular, fname_bold, ptsize);
+ _reset_cells();
+}
+
+void TerminalScreen::resize(int pxwidth, int pxheight)
+{
+ _screen_surface = SDL_SetVideoMode(pxwidth, pxheight, 8, SDL_SWSURFACE|SDL_ANYFORMAT|SDL_RESIZABLE);
+
+ if (_screen_surface == NULL)
+ {
+ fprintf(stderr, "Unable to set video: %s\n", SDL_GetError());
+ throw std::exception();
+ }
+
+ SDL_WM_SetCaption("terminal", NULL);
+
+ _pixel_width = pxwidth;
+ _pixel_height = pxheight;
+
+ _reset_cells();
+}
+
+
+void TerminalScreen::erase()
+{
+ TerminalCell * cell = _cells;
+ for (int i = 0; i < _width * _height; i++)
+ {
+ cell->ch = ' ';
+ cell->attr = 0;
+ cell++;
+ }
+}
+
+
+void TerminalScreen::putch(int x, int y, Uint16 ch, Uint16 attr)
+{
+ TerminalCell &cell = _cells[y * _width + x];
+ cell.ch = ch;
+ cell.attr = attr;
+}
+
+
+void TerminalScreen::commit()
+{
+ TerminalCell * cell = _cells;
+ SDL_Surface *glyph_surface;
+ SDL_Rect dst_rect;
+ for (int y = 0; y < _height; y++)
+ {
+ for (int x = 0; x < _width; x++)
+ {
+ dst_rect.x = x * _cell_width;
+ dst_rect.y = y * _cell_height;
+ glyph_surface = _render.render_glyph(cell->ch);
+ SDL_BlitSurface(glyph_surface, NULL, _screen_surface, &dst_rect);
+ SDL_FreeSurface(glyph_surface);
+ cell++;
+ }
+ }
+
+ SDL_UpdateRect(_screen_surface, 0, 0, 0, 0);
+}
+
+
+void TerminalScreen::_reset_cells()
+{
+ if (_cells)
+ {
+ delete[] _cells;
+ _cells = NULL;
+ }
+
+ _cell_width = _render.get_cell_width();
+ _cell_height = _render.get_cell_height();
+ _width = _pixel_width / _cell_width;
+ _height = _pixel_height / _cell_height;
+
+ int num_cells = _width * _height;
+ _cells = new TerminalCell[num_cells];
+}
+
+
+Terminal::Terminal()
+ : _screen()
+{
+ if (SDL_Init(SDL_INIT_VIDEO) == -1)
+ {
+ fprintf(stderr, "Unable to initialize SDL: %s\n", SDL_GetError());
+ throw std::exception();
+ }
+}
+
+
+Terminal::~Terminal()
+{
+ SDL_Quit();
+}
+
+
+void Terminal::get_next_event(Event &event)
+{
+ SDL_Event sdl_event;
+
+ while (SDL_WaitEvent(&sdl_event))
+ {
+ switch (sdl_event.type)
+ {
+ case SDL_QUIT:
+ event.type = EventType::quit;
+ return;
+
+ case SDL_KEYDOWN:
+ //switch(event.key.keysym.sym)
+ event.type = EventType::keypress;
+ return;
+
+ default:
+ break; // continue loop
+ }
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sdlterm/src/sdlterm.h Sat Jan 05 00:40:27 2013 +0100
@@ -0,0 +1,135 @@
+#include "SDL.h"
+#include "SDL_ttf.h"
+
+#include <map>
+#include <vector>
+
+
+class GlyphRenderer
+{
+public:
+ GlyphRenderer();
+ ~GlyphRenderer();
+
+ void open_font(const char *fname_regular, const char *fname_bold, int ptsize);
+ void close_font();
+
+ SDL_Surface *render_glyph(Uint16 ch);
+
+ int get_cell_width() { return _cell_width; };
+ int get_cell_height() { return _cell_height; };
+
+private:
+ TTF_Font *_font_regular;
+ TTF_Font *_font_bold;
+ int _cell_width;
+ int _cell_height;
+ std::map<Uint16, SDL_Surface*> _cache;
+};
+
+
+struct TerminalCell
+{
+ Uint16 ch;
+ Uint16 attr;
+};
+
+
+class TerminalScreen
+{
+public:
+ TerminalScreen(): _screen_surface(NULL), _cells(NULL), _render() {};
+ ~TerminalScreen();
+
+ void select_font(const char *fname_regular, const char *fname_bold, int ptsize);
+ void resize(int pxwidth, int pxheight);
+
+ void erase();
+ void putch(int x, int y, Uint16 ch, Uint16 attr);
+ void commit();
+
+private:
+ SDL_Surface *_screen_surface;
+ TerminalCell *_cells;
+ GlyphRenderer _render;
+
+ int _pixel_width; // terminal window width in pixels
+ int _pixel_height;
+ int _width; // width in characters
+ int _height; // height in characters
+ int _cell_width; // character cell width in pixels
+ int _cell_height;
+
+ void _reset_cells();
+};
+
+
+enum class EventType : Uint8
+{
+ quit,
+ resize,
+ keypress,
+ mousedown,
+ mouseup,
+ mousemove,
+ mousewheel
+};
+
+
+struct WindowEvent
+{
+ EventType type;
+};
+
+
+struct KeyboardEvent
+{
+ EventType type;
+};
+
+
+struct MouseEvent
+{
+ EventType type;
+};
+
+
+union Event
+{
+ EventType type;
+ WindowEvent window;
+ KeyboardEvent key;
+ MouseEvent mouse;
+};
+
+
+class Terminal
+{
+public:
+ Terminal();
+ ~Terminal();
+
+ void select_font(const char *fname_regular, const char *fname_bold, int ptsize)
+ { _screen.select_font(fname_regular, fname_bold, ptsize); };
+ void resize(int pxwidth, int pxheight) { _screen.resize(pxwidth, pxheight); };
+
+ void erase() { _screen.erase(); };
+ void putch(int x, int y, Uint16 ch) { _screen.putch(x, y, ch, _attr); };
+ void commit() { _screen.commit(); };
+
+ Uint16 prepare_attr(Uint8 fg, Uint8 bg, Uint8 style) { return fg | bg << 8 | style << 16; };
+ void set_attr(Uint16 value) { _attr = value; };
+
+ void set_cursor(int x, int y) { _cursor_x = x; _cursor_y = y; };
+ void show_cursor(bool visible) { _cursor_visible = visible; };
+
+ void get_next_event(Event &event);
+
+private:
+ TerminalScreen _screen;
+ Uint16 _attr;
+ int _cursor_x;
+ int _cursor_y;
+ bool _cursor_visible;
+};
+