/elec/propeller-clock

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  • Committer: Tim Marston
  • Date: 2012-03-09 23:42:20 UTC
  • Revision ID: tim@ed.am-20120309234220-xr1vxzve0o5n2oss
added support for eclipse project and converted to a manual Makefile

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src/text.cc
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#include "config.h"
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#include "Arduino.h"
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#include <avr/pgmspace.h>
 
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#include "display.h"
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// the buffer for the message
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static char _message_modes[ NUM_MESSAGE_BUFFERS ];
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// mode-specific message parameters
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static signed long _message_pos[ NUM_MESSAGE_BUFFERS ];
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// text scaling factors
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static char _message_scale[ NUM_MESSAGE_BUFFERS ];
 
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static signed long _message_params[ NUM_MESSAGE_BUFFERS ];
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// time last frame
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static unsigned long _last_millis;
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static bool _do_draw_reset;
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#define MASK_MODE_SIZE 0x07
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#define MASK_MODE_POS 0x40
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58
 
void reset_message_pos( int message_num )
 
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void reset_message_param( int message_num )
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{
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        if( _message_modes[ message_num ] & Text::MODE_HSCROLL )
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        {
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                switch( _message_modes[ message_num ] & MASK_MODE_SIZE )
 
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                switch( _message_modes[ message_num ] & 0x1c )
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                {
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                case Text::MODE_ONEQUARTER:
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                        _message_pos[ message_num ] = -NUM_SEGMENTS / 4; break;
 
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                        _message_params[ message_num ] = -NUM_SEGMENTS / 4; break;
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                case Text::MODE_ONETHIRD:
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                        _message_pos[ message_num ] = -NUM_SEGMENTS / 3; break;
 
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                        _message_params[ message_num ] = -NUM_SEGMENTS / 3; break;
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                case Text::MODE_HALF:
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                        _message_pos[ message_num ] = -NUM_SEGMENTS / 2; break;
 
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                        _message_params[ message_num ] = -NUM_SEGMENTS / 2; break;
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                case Text::MODE_TWOTHIRDS:
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                        _message_pos[ message_num ] = -NUM_SEGMENTS * 2 / 3; break;
 
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                        _message_params[ message_num ] = -NUM_SEGMENTS * 2 / 3; break;
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                case Text::MODE_THREEQUARTERS:
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                        _message_pos[ message_num ] = -NUM_SEGMENTS * 3 / 4; break;
 
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                        _message_params[ message_num ] = -NUM_SEGMENTS * 3 / 4; break;
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                case Text::MODE_ALL:
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                        _message_pos[ message_num ] = -NUM_SEGMENTS; break;
 
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                        _message_params[ message_num ] = -NUM_SEGMENTS; break;
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                }
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        }
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        else
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        {
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                switch( _message_modes[ message_num ] & MASK_MODE_SIZE )
 
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                switch( _message_modes[ message_num ] & 0x1c )
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                {
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                case Text::MODE_ONEQUARTER:
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                        _message_pos[ message_num ] = NUM_SEGMENTS / 4; break;
 
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                        _message_params[ message_num ] = NUM_SEGMENTS / 4; break;
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                case Text::MODE_ONETHIRD:
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                        _message_pos[ message_num ] = NUM_SEGMENTS / 3; break;
 
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                        _message_params[ message_num ] = NUM_SEGMENTS / 3; break;
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                case Text::MODE_HALF:
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                        _message_pos[ message_num ] = NUM_SEGMENTS / 2; break;
 
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                        _message_params[ message_num ] = NUM_SEGMENTS / 2; break;
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                case Text::MODE_TWOTHIRDS:
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                        _message_pos[ message_num ] = NUM_SEGMENTS * 2 / 3; break;
 
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                        _message_params[ message_num ] = NUM_SEGMENTS * 2 / 3; break;
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                case Text::MODE_THREEQUARTERS:
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                        _message_pos[ message_num ] = NUM_SEGMENTS * 3 / 4; break;
 
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                        _message_params[ message_num ] = NUM_SEGMENTS * 3 / 4; break;
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                case Text::MODE_ALL:
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                        _message_pos[ message_num ] = NUM_SEGMENTS; break;
 
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                        _message_params[ message_num ] = NUM_SEGMENTS; break;
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                }
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                _message_pos[ message_num ] = -( _message_pos[ message_num ] -
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                        TextRenderer::get_width( _message_lens[ message_num ],
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                                        _message_scale[ message_num ] ) ) / 2;
 
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                _message_params[ message_num ] = -( _message_params[ message_num ] -
 
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                        TextRenderer::get_width( _message_lens[ message_num ] ) ) / 2;
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        }
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}
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void Text::set_message( int message_num, PString &pstring )
 
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{
 
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        // update message
 
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        _message_lens[ message_num ] = pstring.length();
 
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}
 
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102
 
 
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void Text::reset_message( int message_num, char mode )
 
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{
 
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        _message_modes[ message_num ] = mode;
 
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        reset_message_param( message_num );
 
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}
 
108
 
 
109
 
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void Text::reset()
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{
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        // reset renderer
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        _duration = 0;
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        _last_millis = ::millis();
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108
 
        // clear all message modes (disable messages)
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        for( int a = 0; a < NUM_MESSAGE_BUFFERS; a++ )
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                _message_modes[ a ] = 0;
 
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        _do_draw_reset = false;
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        // reset the text renderer's output buffer
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        TextRenderer::reset_buffer();
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}
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void Text::set_up_message( int message_num, char mode, char scale )
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{
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        _message_modes[ message_num ] = mode;
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        _message_scale[ message_num ] = scale;
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122
 
        // horizontal scrolling messages need their position reset at start of mode
123
 
        if( _message_modes[ message_num ] & MODE_HSCROLL )
124
 
                reset_message_pos( message_num );
125
 
}
126
 
 
127
 
 
128
 
void Text::set_message_text( int message_num, PString &pstring )
129
 
{
130
 
        // update message
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        _message_lens[ message_num ] = pstring.length();
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        // non-horizontal scrolling modes need their position reset whenever the
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        // text changes
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        if( !( _message_modes[ message_num ] & MODE_HSCROLL ) )
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                reset_message_pos( message_num );
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}
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void Text::draw_reset()
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{
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        // how many milliseconds have elapsed since last frame?
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                _duration = millis - _last_millis;
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        _last_millis = millis;
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        // we'll need to recalculate params for the frame, but we want to do it when
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        // we're not in the middle of a text display (to avoid tearing).
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        _do_draw_reset = true;
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}
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static void draw_message( int message_num, int segment )
 
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void Text::draw( int message_num, int segment )
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{
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        TextRenderer::buffer_in_use();
 
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        // perform a mid-frame reset, as necessary
 
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        if( _do_draw_reset && segment > NUM_SEGMENTS / 2 ) {
 
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                _do_draw_reset = false;
 
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                if( _message_modes[ message_num ] & MODE_HSCROLL )
 
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                {
 
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                        // add to horizontal scroll position
 
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                        _message_params[ message_num ] +=
 
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                                _duration * TEXT_SCROLL_SPEED / 1000;
 
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                        long excess = _message_params[ message_num ] -
 
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                                TextRenderer::get_width( _message_lens[ message_num ] );
 
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                        if( excess >= 0 ) {
 
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                                reset_message_param( message_num );
 
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                                _message_params[ message_num ] += excess;
 
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                        }
 
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                }
 
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        }
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        // calculate the width
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        int width;
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        switch( _message_modes[ message_num ] & MASK_MODE_SIZE )
 
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        switch( _message_modes[ message_num ] & 0x1c )
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        {
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        case Text::MODE_ONEQUARTER:
 
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        case MODE_ONEQUARTER:
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                width = NUM_SEGMENTS / 4;
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                break;
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        case Text::MODE_ONETHIRD:
 
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        case MODE_ONETHIRD:
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                width = NUM_SEGMENTS / 3;
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                break;
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        case Text::MODE_HALF:
 
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        case MODE_HALF:
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                width = NUM_SEGMENTS / 2;
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                break;
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        case Text::MODE_TWOTHIRDS:
 
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        case MODE_TWOTHIRDS:
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                width = NUM_SEGMENTS * 2 / 3;
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                break;
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        case Text::MODE_THREEQUARTERS:
 
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        case MODE_THREEQUARTERS:
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                width = NUM_SEGMENTS * 3 / 4;
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                break;
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        case Text::MODE_ALL:
 
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        case MODE_ALL:
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                width = NUM_SEGMENTS;
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                break;
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        }
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        // convert segment to display-space
183
 
        switch( _message_modes[ message_num ] & MASK_MODE_POS )
 
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        switch( _message_modes[ message_num ] & 0x03 )
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        {
185
 
        case Text::MODE_TOP:
 
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        case MODE_TOP:
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                if( segment < width / 2 )
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                        segment += width / 2;
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                else if( segment >= NUM_SEGMENTS - width / 2 )
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                else
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                        return;
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                break;
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        case Text::MODE_BOTTOM:
 
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        case MODE_BOTTOM:
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                if( segment > ( NUM_SEGMENTS - width ) / 2 &&
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                        segment < ( NUM_SEGMENTS - width ) / 2 + width )
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                {
203
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204
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        // render
205
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        TextRenderer::render(
206
 
                Text::_messages[ message_num ], _message_lens[ message_num ],
207
 
                (long)segment + _message_pos[ message_num ],
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                ( _message_modes[ message_num ] & MASK_MODE_POS ) == Text::MODE_BOTTOM,
209
 
                0, _message_scale[ message_num ] );
210
 
}
211
 
 
212
 
 
213
 
void Text::draw( int segment )
214
 
{
215
 
        // perform a mid-frame reset, as necessary
216
 
        if( _do_draw_reset && segment == NUM_SEGMENTS / 2 ) {
217
 
                _do_draw_reset = false;
218
 
 
219
 
                // go through the messages looking for an active one
220
 
                for( int a = 0; a < NUM_MESSAGE_BUFFERS; a++ )
221
 
                        if( _message_modes[ a ] & MASK_MODE_SIZE )
222
 
                        {
223
 
                                // add to horizontal scroll position
224
 
                                if( _message_modes[ a ] & Text::MODE_HSCROLL ) {
225
 
                                        _message_pos[ a ] +=
226
 
                                                        _duration * TEXT_SCROLL_SPEED / 1000;
227
 
                                        long excess = _message_pos[ a ] -
228
 
                                                        TextRenderer::get_width( _message_lens[ a ],
229
 
                                                                        _message_scale[ a ] );
230
 
                                        if( excess >= 0 ) {
231
 
                                                reset_message_pos( a );
232
 
                                                _message_pos[ a ] += excess;
233
 
                                        }
234
 
                                }
235
 
                        }
236
 
        }
237
 
 
238
 
        // draw any active messages
239
 
        for( int a = 0; a < NUM_MESSAGE_BUFFERS; a++ )
240
 
                if( _message_modes[ a ] & MASK_MODE_SIZE )
241
 
                        draw_message( a, segment );
242
 
}
243
 
 
 
202
                _messages[ message_num ], _message_lens[ message_num ],
 
203
                (long)segment + _message_params[ message_num ],
 
204
                ( _message_modes[ message_num ] & 1 ) == 0, 0 );
 
205
}