X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/16c1f7f345e1850f590cfbf67c3b00fbb6d2e62e..6f349458f6903083bd967f52624a5e639733ad5d:/src/motif/palette.cpp

diff --git a/src/motif/palette.cpp b/src/motif/palette.cpp
index e5ec732673..3e365621a1 100644
--- a/src/motif/palette.cpp
+++ b/src/motif/palette.cpp
@@ -6,32 +6,103 @@
 // Created:     17/09/98
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart
-// Licence:   	wxWindows licence
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
+/*
+ * Colour map
+ *
+ * When constructed with the default constructor, we start from
+ * the wxApp::GetMainColormap, allocating additional read-only cells
+ * in Create().  The cells are freed on the next call to Create()
+ * or when the destructor is called.
+ */
+
+/* Wolfram Gloger <u7y22ab@sunmail.lrz-muenchen.de>
+I have implemented basic colormap support for the X11 versions of
+wxWindows, notably wxPalette::Create().  The way I did it is to
+allocate additional read-only color cells in the default colormap.  In
+general you will get arbitrary pixel values assigned to these new
+cells and therefore I added a method wxColourMap::TransferBitmap()
+which maps the pixel values 0..n to the real ones obtained with
+Create().  This is only implemented for the popular case of 8-bit
+depth.
+
+Allocating read-write color cells would involve installing a private
+X11 colormap for a particular window, and AFAIK this is not
+recommended; only the window manager should do this...  Also, it is
+not the functionality that wxPalette::Create() aims to provide.
+ */
+
 #ifdef __GNUG__
 #pragma implementation "palette.h"
 #endif
 
 #include "wx/palette.h"
+#include "wx/window.h"
+#include "wx/app.h"
+#include "wx/utils.h"
+
+#include <Xm/Xm.h>
+#include "wx/motif/private.h"
 
 #if !USE_SHARED_LIBRARIES
 IMPLEMENT_DYNAMIC_CLASS(wxPalette, wxGDIObject)
+IMPLEMENT_DYNAMIC_CLASS(wxXPalette, wxObject)
 #endif
 
 /*
- * Palette
- *
- */
+* Palette
+*
+*/
+
+wxXPalette::wxXPalette()
+{
+    m_cmap = (WXColormap) 0;
+    m_pix_array_n = 0;
+    m_pix_array = (unsigned long*) 0;
+    m_display = (WXDisplay*) 0;
+    m_destroyable = FALSE;
+}
 
 wxPaletteRefData::wxPaletteRefData()
 {
-    m_colormap = (WXColormap) 0;
 }
 
 wxPaletteRefData::~wxPaletteRefData()
 {
-    // TODO
+    Display *display = (Display*) NULL;
+
+    wxNode *node, *next;
+
+    for (node = m_palettes.First(); node; node = next) {
+        wxXPalette *c = (wxXPalette *)node->Data();
+        unsigned long *pix_array = c->m_pix_array;
+        Colormap cmap = (Colormap) c->m_cmap;
+        bool destroyable = c->m_destroyable;
+        int pix_array_n = c->m_pix_array_n;
+        display = (Display*) c->m_display;
+
+        if (pix_array_n > 0)
+        {
+            //      XFreeColors(display, cmap, pix_array, pix_array_n, 0);
+            // Be careful not to free '0' pixels...
+            int i, j;
+            for(i=j=0; i<pix_array_n; i=j) {
+                while(j<pix_array_n && pix_array[j]!=0) j++;
+                if(j > i) XFreeColors(display, cmap, &pix_array[i], j-i, 0);
+                while(j<pix_array_n && pix_array[j]==0) j++;
+            }
+            delete [] pix_array;
+        }
+
+        if (destroyable)
+            XFreeColormap(display, cmap);
+
+        next = node->Next();
+        m_palettes.DeleteNode(node);
+        delete c;
+    }
 }
 
 wxPalette::wxPalette()
@@ -49,19 +120,52 @@ wxPalette::~wxPalette()
 
 bool wxPalette::Create(int n, const unsigned char *red, const unsigned char *green, const unsigned char *blue)
 {
-  UnRef();
+    UnRef();
+
+    if (!n) {
+        return FALSE;
+    }
+
+    m_refData = new wxPaletteRefData;
 
-  m_refData = new wxPaletteRefData;
+    XColor xcol;
+    Display* display = (Display*) wxGetDisplay();
 
-  // TODO
+    unsigned long *pix_array;
+    Colormap cmap;
+    int pix_array_n;
 
-  return FALSE;
+    cmap = (Colormap) wxTheApp->GetMainColormap(display);
+
+    pix_array = new unsigned long[n];
+    if (!pix_array)
+        return FALSE;
+
+    pix_array_n = n;
+    xcol.flags = DoRed | DoGreen | DoBlue;
+    for(int i = 0; i < n; i++) {
+        xcol.red = (unsigned short)red[i] << 8;
+        xcol.green = (unsigned short)green[i] << 8;
+        xcol.blue = (unsigned short)blue[i] << 8;
+        pix_array[i] = (XAllocColor(display, cmap, &xcol) == 0) ? 0 : xcol.pixel;
+    }
+
+    wxXPalette *c = new wxXPalette;
+
+    c->m_pix_array_n = pix_array_n;
+    c->m_pix_array = pix_array;
+    c->m_cmap = (WXColormap) cmap;
+    c->m_display = (WXDisplay*) display;
+    c->m_destroyable = FALSE;
+    M_PALETTEDATA->m_palettes.Append(c);
+
+    return TRUE;
 }
 
 int wxPalette::GetPixel(const unsigned char red, const unsigned char green, const unsigned char blue) const
 {
     if ( !m_refData )
-  	return FALSE;
+        return FALSE;
 
     // TODO
     return FALSE;
@@ -70,7 +174,7 @@ int wxPalette::GetPixel(const unsigned char red, const unsigned char green, cons
 bool wxPalette::GetRGB(int index, unsigned char *red, unsigned char *green, unsigned char *blue) const
 {
     if ( !m_refData )
-	    return FALSE;
+        return FALSE;
 
     if (index < 0 || index > 255)
         return FALSE;
@@ -79,4 +183,170 @@ bool wxPalette::GetRGB(int index, unsigned char *red, unsigned char *green, unsi
     return FALSE;
 }
 
+WXColormap wxPalette::GetXColormap(WXDisplay* display) const
+{
+    if (!M_PALETTEDATA || (M_PALETTEDATA->m_palettes.Number() == 0))
+        return wxTheApp->GetMainColormap(display);
+
+    wxNode* node = M_PALETTEDATA->m_palettes.First();
+    if (!display && node)
+    {
+        wxXPalette* p = (wxXPalette*) node->Data();
+        return p->m_cmap;
+    }
+    while (node)
+    {
+        wxXPalette* p = (wxXPalette*) node->Data();
+        if (p->m_display == display)
+            return p->m_cmap;
+
+        node = node->Next();
+    }
+
+    /* Make a new one: */
+    wxXPalette *c = new wxXPalette;
+    wxXPalette *first = (wxXPalette *)M_PALETTEDATA->m_palettes.First()->Data();
+    XColor xcol;
+    int pix_array_n = first->m_pix_array_n;
+
+    c->m_pix_array_n = pix_array_n;
+    c->m_pix_array = new unsigned long[pix_array_n];
+    c->m_display = display;
+    c->m_cmap = wxTheApp->GetMainColormap(display);
+    c->m_destroyable = FALSE;
+
+    xcol.flags = DoRed | DoGreen | DoBlue;
+    int i;
+    for (i = 0; i < pix_array_n; i++)
+    {
+        xcol.pixel = first->m_pix_array[i];
+        XQueryColor((Display*) first->m_display, (Colormap) first->m_cmap, &xcol);
+        c->m_pix_array[i] =
+            (XAllocColor((Display*) display, (Colormap) c->m_cmap, &xcol) == 0) ? 0 : xcol.pixel;
+    }
+
+    //    wxPalette* nonConstThis = (wxPalette*) this;
+
+    M_PALETTEDATA->m_palettes.Append(c);
+
+    return c->m_cmap;
+}
+
+bool wxPalette::TransferBitmap(void *data, int depth, int size)
+{
+    switch(depth) {
+    case 8:
+        {
+            unsigned char *uptr = (unsigned char *)data;
+            int pix_array_n;
+            unsigned long *pix_array = GetXPixArray((Display*) wxGetDisplay(), &pix_array_n);
+            while(size-- > 0)
+            {
+                if((int)*uptr < pix_array_n)
+                    *uptr = (unsigned char)pix_array[*uptr];
+                uptr++;
+            }
+
+            return TRUE;
+        }
+    default:
+        return FALSE;
+    }
+}
+
+bool wxPalette::TransferBitmap8(unsigned char *data, unsigned long sz,
+                                void *dest, unsigned int bpp)
+{
+    int pix_array_n;
+    unsigned long *pix_array = GetXPixArray((Display*) wxGetDisplay(), &pix_array_n);
+    switch(bpp) {
+    case 8: {
+        unsigned char *dptr = (unsigned char *)dest;
+        while(sz-- > 0) {
+            if((int)*data < pix_array_n)
+                *dptr = (unsigned char)pix_array[*data];
+            data++;
+            dptr++;
+        }
+        break;
+            }
+    case 16: {
+        unsigned short *dptr = (unsigned short *)dest;
+        while(sz-- > 0) {
+            if((int)*data < pix_array_n)
+                *dptr = (unsigned short)pix_array[*data];
+            data++;
+            dptr++;
+        }
+        break;
+             }
+    case 24: {
+        struct rgb24 { unsigned char r, g, b; } *dptr = (struct rgb24 *)dest;
+        while(sz-- > 0) {
+            if((int)*data < pix_array_n) {
+                dptr->r = pix_array[*data] & 0xFF;
+                dptr->g = (pix_array[*data] >> 8) & 0xFF;
+                dptr->b = (pix_array[*data] >> 16) & 0xFF;
+            }
+            data++;
+            dptr++;
+        }
+        break;
+             }
+    case 32: {
+        unsigned long *dptr = (unsigned long *)dest;
+        while(sz-- > 0) {
+            if((int)*data < pix_array_n)
+                *dptr = pix_array[*data];
+            data++;
+            dptr++;
+        }
+        break;
+             }
+    default:
+        return FALSE;
+    }
+    return TRUE;
+}
+
+unsigned long *wxPalette::GetXPixArray(WXDisplay *display, int *n)
+{
+    if (!M_PALETTEDATA)
+        return (unsigned long*) 0;
+    wxNode *node;
+
+    for (node = M_PALETTEDATA->m_palettes.First(); node; node = node->Next())
+    {
+        wxXPalette *c = (wxXPalette *)node->Data();
+        if (c->m_display == display)
+        {
+            if (n)
+                *n = c->m_pix_array_n;
+            return c->m_pix_array;
+        }
+    }
+
+    /* Not found; call GetXColormap, which will create it, then this again */
+    if (GetXColormap(display))
+        return GetXPixArray(display, n);
+    else
+        return (unsigned long*) 0;
+}
+
+void wxPalette::PutXColormap(WXDisplay* display, WXColormap cm, bool dp)
+{
+    UnRef();
+
+    m_refData = new wxPaletteRefData;
+
+    wxXPalette *c = new wxXPalette;
+
+    c->m_pix_array_n = 0;
+    c->m_pix_array = (unsigned long*) NULL;
+    c->m_display = display;
+    c->m_cmap = cm;
+    c->m_destroyable = dp;
+
+    M_PALETTEDATA->m_palettes.Append(c);
+}