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edn/Sources/tools/Display/Display.cpp

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/**
*******************************************************************************
* @file Display.cpp
* @brief Editeur De N'ours : Basic Pixbuf display function
* @author Edouard DUPIN
* @date 21/01/2010
* @par Project
* Edn
*
* @par Copyright
* Copyright 2010 Edouard DUPIN, all right reserved
*
* This software is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY.
*
* Licence summary :
* You can modify and redistribute the sources code and binaries.
* You can send me the bug-fix
* You can not earn money with this Software (if the source extract from Edn
* represent less than 50% of original Sources)
* Term of the licence in in the file licence.txt.
*
*******************************************************************************
*/
#include "tools_debug.h"
#include "tools_globals.h"
#include "Display.h"
#include "ColorizeManager.h"
#include "charset.h"
#include <string>
#undef __class__
#define __class__ "Display"
#define FONT_BOLD_NO (0)
#define FONT_BOLD_YES (1)
#define FONT_ITALIC_NO (0)
#define FONT_ITALIC_YES (1)
// Variables privé du namespace
#define POLICE_NAME "Monospace"
#ifdef USE_GTK_VERSION_3_0
#define POLICE_SIZE 15
static int32_t m_pangoFontWidth = 9;
static int32_t m_pangoFontHeight = 19;
#elif USE_GTK_VERSION_2_0
#define POLICE_SIZE 12
static int32_t m_pangoFontWidth = 7;
static int32_t m_pangoFontHeight = 15;
#endif
/*
#define POLICE_SIZE 11
static int32_t m_pangoFontWidth = 7;
static int32_t m_pangoFontHeight = 11;
static cairo_font_face_t * m_cairoFont[2][2] = {{NULL, NULL},{ NULL, NULL}};
*/
static cairo_font_face_t * m_cairoFont[2][2] = {{NULL, NULL},{ NULL, NULL}};
void Display::Init(void)
{
m_cairoFont[FONT_ITALIC_NO][FONT_BOLD_NO] = cairo_toy_font_face_create(POLICE_NAME, CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
m_cairoFont[FONT_ITALIC_YES][FONT_BOLD_NO] = cairo_toy_font_face_create(POLICE_NAME, CAIRO_FONT_SLANT_ITALIC, CAIRO_FONT_WEIGHT_NORMAL);
m_cairoFont[FONT_ITALIC_NO][FONT_BOLD_YES] = cairo_toy_font_face_create(POLICE_NAME, CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
m_cairoFont[FONT_ITALIC_YES][FONT_BOLD_YES] = cairo_toy_font_face_create(POLICE_NAME, CAIRO_FONT_SLANT_ITALIC, CAIRO_FONT_WEIGHT_BOLD);
if ( NULL == m_cairoFont[FONT_ITALIC_NO][FONT_BOLD_NO]) {
EDN_ASSERT(FALSE, "basic font ERROR");
}
if ( NULL == m_cairoFont[FONT_ITALIC_YES][FONT_BOLD_NO]) {
EDN_ERROR("Italic font error ... link with basic font");
m_cairoFont[FONT_ITALIC_YES][FONT_BOLD_NO] = m_cairoFont[FONT_ITALIC_NO][FONT_BOLD_NO];
}
if ( NULL == m_cairoFont[FONT_ITALIC_NO][FONT_BOLD_YES]) {
EDN_ERROR("Bold font error ... link with basic font");
m_cairoFont[FONT_ITALIC_NO][FONT_BOLD_YES] = m_cairoFont[FONT_ITALIC_NO][FONT_BOLD_NO];
}
if ( NULL == m_cairoFont[FONT_ITALIC_YES][FONT_BOLD_YES]) {
EDN_ERROR("Italic & Bold font error ... link with basic font");
m_cairoFont[FONT_ITALIC_YES][FONT_BOLD_YES] = m_cairoFont[FONT_ITALIC_NO][FONT_BOLD_NO];
}
}
void Display::UnInit(void)
{
// clean the builder...
cairo_font_face_destroy(m_cairoFont[FONT_ITALIC_NO][FONT_BOLD_NO]);
cairo_font_face_destroy(m_cairoFont[FONT_ITALIC_YES][FONT_BOLD_NO]);
cairo_font_face_destroy(m_cairoFont[FONT_ITALIC_NO][FONT_BOLD_YES]);
cairo_font_face_destroy(m_cairoFont[FONT_ITALIC_YES][FONT_BOLD_YES]);
}
int32_t Display::GetFontHeight(void)
{
return m_pangoFontHeight;
}
int32_t Display::GetFontWidth(void)
{
return m_pangoFontWidth;
}
cairo_font_face_t * Display::GetFont(bool bold, bool italic)
{
if( false == bold
&& false == italic) {
return m_cairoFont[FONT_ITALIC_NO][FONT_BOLD_NO];
} else if( true == bold
&& false == italic) {
return m_cairoFont[FONT_ITALIC_NO][FONT_BOLD_YES];
} else if ( false == bold
&& true == italic) {
return m_cairoFont[FONT_ITALIC_YES][FONT_BOLD_NO];
}
return m_cairoFont[FONT_ITALIC_YES][FONT_BOLD_YES];
}
#undef __class__
#define __class__ "DrawerManager"
/**
* @brief DrawerManager constructor : generate a memoryDC where we can draw everything...
*
* @param [in] window Current windows where the memoryDC must be paint
* @param [in] x Current width of the Display
* @param [in] y Current Height of the Display
*
* @note : No exeption
*
* @return ---
*
*/
DrawerManager::DrawerManager(GtkWidget * widget, int32_t x, int32_t y)
{
m_size.x = x;
m_size.y = y;
m_haveWork = false;
// Create the Cairo Element
# if USE_GTK_VERSION_3_0
m_cairo = gdk_cairo_create(gtk_widget_get_window(widget));
# elif USE_GTK_VERSION_2_0
m_cairo = gdk_cairo_create(widget->window);
# endif
//cairo_translate(m_cairo, 0, 7);
cairo_set_source_rgb(m_cairo, 0, 0, 0);
cairo_paint(m_cairo);
cairo_set_font_size(m_cairo, POLICE_SIZE);
m_dataToDisplay[0] = '\0';
cairo_scale(m_cairo, 1.0, 1.0);
// http://cairographics.org/FAQ/#clear_a_surface
// http://gtk.developpez.com/faq/?page=gtkwidget#GTK_WIDGET_transparent
//cairo_set_source_rgba(m_cairo, 1, 1, 1, 0);
//cairo_set_operator(m_cairo, CAIRO_OPERATOR_SOURCE);
//cairo_paint(m_cairo);
//cairo_fill(m_cairo);
//cairo_stroke (m_cairo);
}
/**
* @brief main DrawerManager destructor : Copy data on the curent screen
*
* @param ---
*
* @note : No exeption
*
* @return ---
*
*/
DrawerManager::~DrawerManager()
{
cairo_destroy(m_cairo);
}
/**
* @brief Draw Text with the specify color
*
* This function does not display the text directly, it save it while a flush appare or the y position differ, or the color differ.
* This is for the char by char writing ==> more efficient when we write multiple char.
*
* @param [in] SelectColor Color that is used to display data
* @param [in] x Horizontal position to display data
* @param [in] y Vertical position to display data
* @param [in] myText Text to write in UTF8 ...
* @param [in] displayBG unused
*
* @return ---
*
*/
void DrawerManager::Text(Colorize *SelectColor, int32_t x, int32_t y,const char *myUTF8Text, int32_t len)
{
EDN_CHECK_INOUT(NULL!=SelectColor);
// check if flush is needed :
if (true == m_haveWork) {
if( m_pos.y != y
|| m_selectColor != SelectColor)
{
Flush();
}
}
// check change
if (false == m_haveWork) {
m_pos.x = x;
m_pos.y = y;
m_selectColor = SelectColor;
}
//EDN_WARNING("add data : \"" << myText << "\" x=" << x << " y=" << y );
// process :
m_haveWork = true;
strcat(m_dataToDisplay, myUTF8Text);
if (len != -1 ) {
m_nbElement+=len;
} else {
m_nbElement+=strUtf8Len(myUTF8Text);
}
}
void DrawerManager::Text(color_ts & SelectColorFg, color_ts & SelectColorBg, int32_t x, int32_t y,const char *myText)
{
Flush();
cairo_set_font_face(m_cairo, Display::GetFont(false, false));
int32_t letterHeight = Display::GetFontHeight();
int32_t letterWidth = Display::GetFontWidth();
DirectRectangle(SelectColorBg, x, y, letterWidth*strlen(myText), letterHeight);
cairo_fill(m_cairo);
cairo_move_to(m_cairo, x, y+letterHeight-4);
cairo_set_source_rgb(m_cairo, SelectColorFg.red, SelectColorFg.green, SelectColorFg.blue);
cairo_show_text(m_cairo, myText);
cairo_fill(m_cairo);
}
void DrawerManager::Text(color_ts & SelectColorFg, int32_t x, int32_t y,const char *myText)
{
Flush();
cairo_set_font_face(m_cairo, Display::GetFont(false, false));
int32_t letterHeight = Display::GetFontHeight();
cairo_move_to(m_cairo, x, y+letterHeight-4);
cairo_set_source_rgb(m_cairo, SelectColorFg.red, SelectColorFg.green, SelectColorFg.blue);
cairo_show_text(m_cairo, myText);
cairo_fill(m_cairo);
}
void DrawerManager::SpaceText(color_ts & SelectColor, int32_t x, int32_t y,int32_t nbChar)
{
Flush();
int32_t letterHeight = Display::GetFontHeight();
int32_t letterWidth = Display::GetFontWidth();
DirectRectangle(SelectColor, x, y, letterWidth*nbChar, letterHeight);
cairo_fill(m_cairo);
}
/**
* @brief Force de display of the curent Text
*
* The flush is to be more performent with the Pango display methode...
*
* @param ---
*
* @return ---
*
*/
void DrawerManager::Flush(void)
{
if (true == m_haveWork) {
//EDN_WARNING("flush : \"" << m_dataToDisplay << "\"" << " bold=" << m_selectColor->GetBold() << " italic=" << m_selectColor->GetItalic());
m_haveWork = false;
cairo_set_font_face(m_cairo, Display::GetFont(m_selectColor->GetBold(), m_selectColor->GetItalic()));
int32_t letterHeight = Display::GetFontHeight();
if (true == m_selectColor->HaveBg() ) {
int32_t letterWidth = Display::GetFontWidth();
int32_t stringLen = m_nbElement;
// generate Clean BG:
DirectRectangle(m_selectColor, m_pos.x, m_pos.y, letterWidth*stringLen, letterHeight);
}
cairo_move_to(m_cairo, m_pos.x, m_pos.y+letterHeight-4);
m_selectColor->ApplyFG(m_cairo);
cairo_show_text(m_cairo, m_dataToDisplay);
cairo_fill(m_cairo);
m_dataToDisplay[0] = '\0';
m_nbElement = 0;
}
}
/**
* @brief display a rectangle with the curent bgColor and no border
*
* This function in the open API to drow the rectangle, it flush the curent Text in the buffer
*
* @param [in] SelectColor Color that is used to display rectangle
* @param [in] x Horizontal position to display rectangle
* @param [in] y Vertical position to display rectangle
* @param [in] width Width of the rectangle
* @param [in] height Height of the rectangle
*
* @return ---
*
*/
void DrawerManager::Rectangle(Colorize *SelectColor, int32_t x, int32_t y, int32_t width, int32_t height)
{
Flush();
DirectRectangle(SelectColor, x, y, width, height);
}
/**
* @brief Real function to display the rectangle (no flush done (expectially for the Background display)
*
* @param [in] SelectColor Color that is used to display rectangle
* @param [in] x Horizontal position to display rectangle
* @param [in] y Vertical position to display rectangle
* @param [in] width Width of the rectangle
* @param [in] height Height of the rectangle
*
* @return ---
*
*/
void DrawerManager::DirectRectangle(Colorize *SelectColor, int32_t x, int32_t y, int32_t width, int32_t height)
{
EDN_CHECK_INOUT(NULL!=SelectColor);
//EDN_INFO("x="<< x <<" y="<< y <<" width="<< width <<" height="<< height);
//gdk_draw_rectangle( p_pixmap, SelectColor->GetColorBG(), TRUE, x, y, width, height);
// set color
SelectColor->ApplyBG(m_cairo);
// set postion
cairo_rectangle(m_cairo, x, y, width, height);
//cairo_stroke(m_cairo);
// flush
cairo_fill(m_cairo);
}
void DrawerManager::DirectRectangle(color_ts &SelectColor, int32_t x, int32_t y, int32_t width, int32_t height)
{
cairo_set_source_rgb(m_cairo, SelectColor.red, SelectColor.green, SelectColor.blue);
// set postion
cairo_rectangle(m_cairo, x, y, width, height);
//cairo_stroke(m_cairo);
// flush
cairo_fill(m_cairo);
}
/**
* @brief Clean the curent Windows with the curent color
*
* @param [in] SelectColor Color that is used to display background
*
* @return ---
*
*/
void DrawerManager::Clean(Colorize *SelectColor)
{
m_haveWork = false;
DirectRectangle(SelectColor, 0, 0, m_size.x, m_size.y);
}
/**
* @brief Clean the curent Windows with the curent color
*
* @param [in] SelectColor Color that is used to display background
*
* @return ---
*
*/
void DrawerManager::Clean(color_ts & SelectColor)
{
m_haveWork = false;
DirectRectangle(SelectColor, 0, 0, m_size.x, m_size.y);
}
/**
* @brief Display a cursor with the cortect form.
*
* Automatic selection of the XML color "cursorColor"
*
* @param [in] x Horizontal position to display cursor
* @param [in] y Vertical position to display cursor
*
* @return ---
*
*/
#define CURSOR_WIDTH (4)
void DrawerManager::Cursor(int32_t x, int32_t y)
{
Flush();
// get the cursor Color :
color_ts myColor = ColorizeManager::getInstance()->Get(COLOR_CODE_CURSOR);
cairo_set_source_rgb(m_cairo, myColor.red, myColor.green, myColor.blue);
// draw cursor
int32_t letterHeight = Display::GetFontHeight();
int32_t letterWidth = Display::GetFontWidth();
// depending on the inserting mode
if (false == globals::IsSetInsert()) {
cairo_set_line_width(m_cairo, 2);
cairo_move_to(m_cairo, x-CURSOR_WIDTH, y - letterHeight+1);
cairo_rel_line_to(m_cairo, CURSOR_WIDTH*2, 0);
cairo_rel_move_to(m_cairo, -CURSOR_WIDTH, 0);
cairo_rel_line_to(m_cairo, 0, letterHeight-2);
cairo_rel_move_to(m_cairo, -CURSOR_WIDTH, 0);
cairo_rel_line_to(m_cairo, CURSOR_WIDTH*2, 0);
} else {
cairo_set_line_width(m_cairo, 1);
cairo_move_to(m_cairo, x, y - letterHeight + 1);
cairo_rel_line_to(m_cairo, letterWidth, 0);
cairo_rel_line_to(m_cairo, 0, letterHeight);
cairo_rel_line_to(m_cairo, -letterWidth, 0);
cairo_rel_line_to(m_cairo, 0, -letterHeight);
}
cairo_stroke(m_cairo);
cairo_fill(m_cairo);
}
/**
* @brief Display a end of the curent line ...
*
* Automatic draw the end of line with the curent XML color "cursorColor"
*
* @param [in] x Horizontal position to display cursor
* @param [in] y Vertical position to display cursor
*
* @return ---
*
*/
void DrawerManager::EndOfLine(int32_t x, int32_t y)
{
if (true == globals::IsSetDisplayEndOfLine() ) {
Flush();
// get the cursor Color :
color_ts myColor = ColorizeManager::getInstance()->Get(COLOR_CODE_CURSOR);
cairo_set_source_rgb(m_cairo, myColor.red, myColor.green, myColor.blue);
// draw cursor
int32_t letterHeight = Display::GetFontHeight();
// depending on the inserting mode
/*
x1 x2
y1 | |-----
| |-----
| |
y2 | |
*/
cairo_set_line_width(m_cairo, 2);
cairo_move_to(m_cairo, x, y - letterHeight+1);
cairo_rel_line_to(m_cairo, 0, letterHeight);
cairo_move_to(m_cairo, x+2, y - letterHeight+1);
cairo_rel_line_to(m_cairo, 0, letterHeight);
cairo_arc(m_cairo, x+3, y - letterHeight/4*3, 3.0, -3.149/2, 3.149/2);
cairo_stroke(m_cairo);
cairo_fill(m_cairo);
}
}
/**
* @brief Display a Tabulation with the user form selection.
*
* @param [in] SelectColor Color that is used to display Tabulation
* @param [in] x Horizontal position to display cursor
* @param [in] y Vertical position to display cursor
* @param [in] mbColomn Width of the current Tabulation caracter (in number of Char)
*
* @return ---
*
*/
void DrawerManager::Tabulation(Colorize *SelectColor, int32_t x, int32_t y, int32_t mbColomn)
{
Flush();
int32_t letterWidth = Display::GetFontWidth();
int32_t letterHeight = Display::GetFontHeight();
// generate Clean BG:
DirectRectangle(SelectColor, x, y-letterHeight, letterWidth*mbColomn, letterHeight);
// set the pen for the display
SelectColor->ApplyFG(m_cairo);
uint32_t yCalc = y - (letterHeight+1)/2;
cairo_move_to(m_cairo, x + 3, yCalc);
cairo_line_to(m_cairo, x + letterWidth*mbColomn - 2 , yCalc);
cairo_rel_line_to(m_cairo, -6 , -2);
cairo_move_to(m_cairo, x + letterWidth*mbColomn - 2 , yCalc);
cairo_rel_line_to(m_cairo, -6 , +2);
cairo_stroke(m_cairo);
cairo_fill(m_cairo);
}
/**
* @brief Display an unknow UTF8 character (a special rectangle)
*
* @param [in] SelectColor Color that is used to display Tabulation
* @param [in] x Horizontal position to display cursor
* @param [in] y Vertical position to display cursor
* @param [in] utf8Size number of char used by the UTF8 character
* @param [in] ValidUtf8 true if the character UTF8 is well encoded
*
* @return ---
*
*/
void DrawerManager::UTF8UnknownElement(Colorize *SelectColor, int32_t x, int32_t y, int8_t utf8Size, bool ValidUtf8)
{
Flush();
int32_t letterWidth = Display::GetFontWidth();
int32_t letterHeight = Display::GetFontHeight();
// generate Clean BG:
DirectRectangle(SelectColor, x, y-letterHeight, letterWidth*2, letterHeight);
SelectColor->ApplyFG(m_cairo);
/*
y1 y2
x1 |-------|
| |
| |
x2 |-------|
*/
uint32_t x1 = x + 2;
uint32_t x2 = x + letterWidth*2 - 2;
uint32_t y1 = y - letterHeight + 2;
uint32_t y2 = y - 2;
// Box
cairo_move_to(m_cairo, x1 , y1);
cairo_line_to(m_cairo, x2 , y1);
cairo_line_to(m_cairo, x2 , y2);
cairo_line_to(m_cairo, x1 , y2);
cairo_line_to(m_cairo, x1 , y1);
// croix in the middle
switch(utf8Size)
{
case 1:
break;
case 2:
cairo_line_to(m_cairo, x2 , y2);
break;
case 3:
cairo_move_to(m_cairo, x1 , y2);
cairo_line_to(m_cairo, x2 , y1);
break;
default:
cairo_line_to(m_cairo, x2 , y2);
cairo_move_to(m_cairo, x1 , y2);
cairo_line_to(m_cairo, x2 , y1);
break;
}
if (false == ValidUtf8) {
cairo_move_to(m_cairo, x1 , y2-2);
cairo_line_to(m_cairo, x2 , y2-2);
}
cairo_stroke(m_cairo);
cairo_fill(m_cairo);
}
/* Basic axample with cairo and pango...
cairo_t *cr;
cr = gdk_cairo_create(widget->window);
cairo_translate(cr, 0, 7);
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_paint(cr);
gint pos = 18;//GTK_CPU(widget)->sel;
gint rect = pos / 5;
cairo_set_source_rgb(cr, 0.2, 0.4, 0);
gint i;
for ( i = 1; i <= 20; i++) {
if (i > 20 - rect) {
cairo_set_source_rgb(cr, 0.6, 1.0, 0);
} else {
cairo_set_source_rgb(cr, 0.2, 0.4, 0);
}
cairo_rectangle(cr, 8, i*4, 30, 3);
cairo_rectangle(cr, 42, i*4, 30, 3);
cairo_fill(cr);
}
//----
PangoLayout *layout;
PangoFontDescription *desc;
cairo_translate(cr, 10, 20);
layout = pango_cairo_create_layout(cr);
pango_layout_set_text(layout, "Hello World!", -1);
desc = pango_font_description_from_string("Sans Bold 12");
pango_layout_set_font_description(layout, desc);
pango_font_description_free(desc);
cairo_set_source_rgb(cr, 0.0, 0.0, 1.0);
pango_cairo_update_layout(cr, layout);
pango_cairo_show_layout(cr, layout);
g_object_unref(layout);
//-----
cairo_destroy(cr);
*/
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