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Refactor xforms' colour handling code.

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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@6107 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Angus Leeming 2003-02-11 17:53:38 +00:00
parent 5dc9643188
commit 26d5907fbc
9 changed files with 101 additions and 71 deletions
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14
src/frontends/xforms/ChangeLog
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@ -1,3 +1,17 @@
2003-02-11 Angus Leeming <leeming@lyx.org>
* xforms_helpers.[Ch] (fl_getmcolor): new function; a wrapper for the
xforms routine that accepts unsigned ints.
* Color.[Ch] (getRGBColor): factorise code into one place.
* FormPreferences.[Ch] (X11hexname: not a class member. Move to
namespace anon.
* FormPreferences.C: use fl_getmcolor and getRGBColor.
* lyx_gui.C: use getRGBColor.
* xformsImage.C: use getRGBColor.
2003-02-11 Angus Leeming <leeming@lyx.org>
* bmtable.c: whitespace and indentation consistent with the other

23
src/frontends/xforms/Color.C
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@ -32,6 +32,29 @@ int const nohue = -1;
} // namespace anon
bool getRGBColor(LColor::color col,
unsigned int & r, unsigned int & g, unsigned int & b)
{
string const name = lcolor.getX11Name(col);
Display * const display = fl_get_display();
Colormap const cmap = fl_state[fl_get_vclass()].colormap;
XColor xcol, ccol;
if (XLookupColor(display, cmap, name.c_str(), &xcol, &ccol) == 0) {
r = 0;
g = 0;
b = 0;
return false;
}
r = xcol.red / 256;
g = xcol.green / 256;
b = xcol.blue / 256;
return true;
}
RGBColor::RGBColor(HSVColor const & hsv)
{
double h = hsv.h;

15
src/frontends/xforms/Color.h
View File

@ -22,6 +22,13 @@
#endif
#include "LString.h"
#include "LColor.h"
/** Given col, fills r, g, b in the range 0-255.
The function returns true if successful.
It returns false on failure and sets r, g, b to 0. */
bool getRGBColor(LColor::color col,
unsigned int & r, unsigned int & g, unsigned int & b);
struct RGBColor;
@ -36,11 +43,11 @@ struct HSVColor {
};
struct RGBColor {
int r;
int g;
int b;
unsigned int r;
unsigned int g;
unsigned int b;
RGBColor() : r(0), g(0), b(0) {}
RGBColor(int red, int green, int blue)
RGBColor(unsigned int red, unsigned int green, unsigned int blue)
: r(red), g(green), b(blue) {}
RGBColor(HSVColor const &);
};

51
src/frontends/xforms/FormPreferences.C
View File

@ -89,6 +89,18 @@ pair<string,string> parseFontName(string const & name)
}
string const X11hexname(RGBColor const & col)
{
ostringstream ostr;
ostr << '#' << std::setbase(16) << setfill('0')
<< setw(2) << col.r
<< setw(2) << col.g
<< setw(2) << col.b;
return STRCONV(ostr.str());
}
} // namespace anon
@ -635,7 +647,7 @@ void FormPreferences::Colors::InputHSV()
fl_redraw_object(dialog_->button_color);
col = HSVColor(hue, 1.0, 1.0);
col.r = max(col.r, 0);
col.r = max(col.r, 0u);
fl_mapcolor(GUI_COLOR_HUE_DIAL, col.r, col.g, col.b);
fl_redraw_object(dialog_->dial_hue);
@ -755,16 +767,13 @@ void FormPreferences::Colors::LoadBrowserLyX()
|| lc == LColor::inherit
|| lc == LColor::ignore) continue;
string const name = lcolor.getX11Name(lc);
Display * display = fl_get_display();;
Colormap const colormap = fl_state[fl_get_vclass()].colormap;
XColor xcol, ccol;
if (XLookupColor(display, colormap, name.c_str(), &xcol, &ccol)
== 0) {
RGBColor col;
bool const success = getRGBColor(lc, col.r, col.g, col.b);
if (!success) {
lyxerr << "FormPreferences::Colors::LoadBrowserLyX:\n"
<< "LColor " << lcolor.getLyXName(lc)
<< ": X can't find color \"" << name
<< ": X can't find color \""
<< lcolor.getX11Name(lc)
<< "\". Set to \"black\"!" << endl;
string const arg = lcolor.getLyXName(lc) + " black";
@ -772,16 +781,6 @@ void FormPreferences::Colors::LoadBrowserLyX()
continue;
}
// X has found the color. Now find the "appropriate" X11 name
// for this color.
// Note that X stores the RGB values in the range 0 - 65535
// whilst we require them in the range 0 - 255.
RGBColor col;
col.r = xcol.red / 256;
col.g = xcol.green / 256;
col.b = xcol.blue / 256;
// Create a valid X11 name of the form "#rrggbb" and change the
// LColor X11name to this. Don't want to trigger a redraw,
// as we're just changing the name not the RGB values.
@ -878,7 +877,7 @@ void FormPreferences::Colors::SwitchColorSpace() const
fl_set_slider_value(dialog_->slider_value, hsv.v);
col = HSVColor(hsv.h, 1.0, 1.0);
col.r = max(col.r, 0);
col.r = max(col.r, 0u);
fl_mapcolor(GUI_COLOR_HUE_DIAL, col.r, col.g, col.b);
fl_redraw_object(dialog_->dial_hue);
@ -916,18 +915,6 @@ void FormPreferences::Colors::SwitchColorSpace() const
fl_unfreeze_form(dialog_->form);
}
string const FormPreferences::Colors::X11hexname(RGBColor const & col) const
{
ostringstream ostr;
ostr << '#' << std::setbase(16) << setfill('0')
<< setw(2) << col.r
<< setw(2) << col.g
<< setw(2) << col.b;
return STRCONV(ostr.str());
}
FormPreferences::Converters::Converters(FormPreferences & p)
: parent_(p)

2
src/frontends/xforms/FormPreferences.h
View File

@ -129,8 +129,6 @@ private:
void Modify();
///
void SwitchColorSpace() const;
///
string const X11hexname(RGBColor const &) const;
///
FormPreferences & parent_;

28
src/frontends/xforms/lyx_gui.C
View File

@ -325,26 +325,20 @@ FuncStatus lyx_gui::getStatus(FuncRequest const & /*ev*/)
string const lyx_gui::hexname(LColor::color col)
{
string const name = lcolor.getX11Name(col);
Display * const display = fl_get_display();
Colormap const cmap = fl_state[fl_get_vclass()].colormap;
XColor xcol, ccol;
unsigned int r, g, b;
bool const success = getRGBColor(col, r, g, b);
if (!success) {
lyxerr << "X can't find color for \"" << lcolor.getLyXName(col)
<< '"' << endl;
return string();
}
if (XLookupColor(display, cmap, name.c_str(), &xcol, &ccol) == 0) {
lyxerr << "X can't find color \""
<< lcolor.getLyXName(col)
<< '"' << endl;
return string();
}
ostringstream os;
ostringstream os;
// Note that X stores the RGB values in the range 0 - 65535
// whilst we require them in the range 0 - 255.
os << setbase(16) << setfill('0')
<< setw(2) << (xcol.red / 256)
<< setw(2) << (xcol.green / 256)
<< setw(2) << (xcol.blue / 256);
<< setw(2) << r
<< setw(2) << g
<< setw(2) << b;
return STRCONV(os.str());
}

22
src/frontends/xforms/xformsImage.C
View File

@ -16,7 +16,7 @@
#include "xformsImage.h"
#include "graphics/GraphicsParams.h"
#include "LColor.h"
#include "Color.h"
#include "converter.h" // formats
#include "debug.h"
#include "support/LAssert.h"
@ -454,24 +454,14 @@ void init_graphics()
}
unsigned int packedcolor(LColor::color c)
unsigned int packedcolor(LColor::color col)
{
string const x11color = lcolor.getX11Name(c);
Display * display = fl_get_display();
Colormap cmap = fl_state[fl_get_vclass()].colormap;
XColor xcol;
XColor ccol;
if (XLookupColor(display, cmap, x11color.c_str(), &xcol, &ccol) == 0)
// Unable to parse x11color.
unsigned int r, g, b;
bool const success = getRGBColor(col, r, g, b);
if (!success)
// Set to black on failure
return FL_PACK(255,255,255);
// Note that X stores the RGB values in the range 0 - 65535
// whilst we require them in the range 0 - 255.
unsigned int const r = xcol.red / 256;
unsigned int const g = xcol.green / 256;
unsigned int const b = xcol.blue / 256;
return FL_PACK(r, g, b);
}

13
src/frontends/xforms/xforms_helpers.C
View File

@ -42,6 +42,19 @@ bool isActive(FL_OBJECT * ob)
}
// A wrapper for the xforms routine, but this one accepts uint args
unsigned long fl_getmcolor(int i,
unsigned int * r, unsigned int * g, unsigned int * b)
{
int r2, g2, b2;
unsigned long ret_val = ::fl_getmcolor(i, &r2, &g2, &b2);
*r = r2;
*g = g2;
*b = b2;
return ret_val;
}
// Set an FL_OBJECT to activated or deactivated
void setEnabled(FL_OBJECT * ob, bool enable)
{

4
src/frontends/xforms/xforms_helpers.h
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@ -26,6 +26,10 @@
class LyXLength;
// A wrapper for the xforms routine, but this one accepts uint args
unsigned long fl_getmcolor(int i, unsigned int * r, unsigned int * g,
unsigned int * b);
// what we always need for lengths
string const choice_Length_All =
"cm|mm|in|text%%|col%%|page%%|line%%|ex|em|pt|sp|bp|dd|pc|cc|mu";