holds info about screen

2 files changed, 319 insertions, 0 deletions

diff --git a/src/ScreenInfo.cc b/src/ScreenInfo.cc
new file mode 100644
index 0000000..8e46bcf
--- /dev/null
+++ b/src/ScreenInfo.cc
@@ -0,0 +1,235 @@
+// ScreenInfo.cc for fluxbox
+// Copyright (c) 2003 Henrik Kinnunen (fluxgen<at>users.sourceforge.net)
+//
+// from BaseDisplay.cc in Blackbox 0.61.1
+// Copyright (c) 1997 - 2000 Brad Hughes (bhughes at tcac.net)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+// $Id: ScreenInfo.cc,v 1.1 2003/05/10 13:54:29 fluxgen Exp $
+
+#include "ScreenInfo.hh"
+
+#include "App.hh"
+
+#include <X11/Xutil.h>
+
+ScreenInfo::ScreenInfo(int num) {
+    
+    Display * const disp = FbTk::App::instance()->display();
+    screen_number = num;
+
+    root_window = RootWindow(disp, screen_number);
+    depth = DefaultDepth(disp, screen_number);
+
+    width =
+        WidthOfScreen(ScreenOfDisplay(disp, screen_number));
+    height =
+        HeightOfScreen(ScreenOfDisplay(disp, screen_number));
+
+    // search for a TrueColor Visual... if we can't find one... we will use the
+    // default visual for the screen
+    XVisualInfo vinfo_template, *vinfo_return;
+    int vinfo_nitems;
+
+    vinfo_template.screen = screen_number;
+    vinfo_template.c_class = TrueColor;
+
+    visual = (Visual *) 0;
+
+    if ((vinfo_return = XGetVisualInfo(disp,
+                                       VisualScreenMask | VisualClassMask,
+                                       &vinfo_template, &vinfo_nitems)) &&
+        vinfo_nitems > 0) {
+                        
+        for (int i = 0; i < vinfo_nitems; i++) {
+            if (depth < (vinfo_return + i)->depth) {
+                depth = (vinfo_return + i)->depth;
+                visual = (vinfo_return + i)->visual;
+            }
+        }
+
+        XFree(vinfo_return);
+    }
+
+    if (visual) {
+        m_colormap = XCreateColormap(disp, root_window,
+                                     visual, AllocNone);
+    } else {
+        visual = DefaultVisual(disp, screen_number);
+        m_colormap = DefaultColormap(disp, screen_number);
+    }
+
+#ifdef XINERAMA
+    // check if we have Xinerama extension enabled
+    if (XineramaIsActive(disp)) {
+        m_hasXinerama = true;
+        xineramaLastHead = 0;
+        xineramaInfos =
+            XineramaQueryScreens(disp, &xineramaNumHeads);
+    } else {
+        m_hasXinerama = false;
+        xineramaInfos = 0; // make sure we don't point anywhere we shouldn't
+    }
+#endif // XINERAMA 
+}
+
+ScreenInfo::~ScreenInfo() {
+#ifdef XINERAMA
+    if (m_hasXinerama) { // only free if we first had it
+        XFree(xineramaInfos);
+        xineramaInfos = 0;
+    }
+#endif // XINERAMA
+}
+
+#ifdef XINERAMA
+
+/**
+   Searches for the head at the coordinates
+   x,y. If it fails or Xinerama isn't
+   activated it'll return head nr 0
+*/
+unsigned int ScreenInfo::getHead(int x, int y) const {
+
+    // is Xinerama extensions enabled?
+    if (hasXinerama()) {
+        // check if last head is still active
+        /*              if ((xineramaInfos[xineramaLastHead].x_org <= x) &&
+                        ((xineramaInfos[xineramaLastHead].x_org +
+                        xineramaInfos[xineramaLastHead].width) > x) &&
+                        (xineramaInfos[xineramaLastHead].y_org <= y) &&
+                        ((xineramaInfos[xineramaLastHead].y_org +
+                        xineramaInfos[xineramaLastHead].height) > y)) {
+                        return xineramaLastHead;
+                        } else { */
+        // go trough all the heads, and search
+        for (int i = 0; (signed) i < xineramaNumHeads; i++) {
+            if (xineramaInfos[i].x_org <= x &&
+                (xineramaInfos[i].x_org + xineramaInfos[i].width) > x &&
+                xineramaInfos[i].y_org <= y &&
+                (xineramaInfos[i].y_org + xineramaInfos[i].height) > y)
+                // return (xineramaLastHead = i);
+                return i;
+        }
+        //      }
+    }
+
+    return 0;
+}
+
+/**
+   Searches for the head that the pointer
+   currently is on, if it isn't found
+   the first one is returned
+*/
+unsigned int ScreenInfo::getCurrHead(void) const {
+
+    // is Xinerama extensions enabled?
+    if (hasXinerama()) {
+        int x, y, wX, wY;
+        unsigned int mask;
+        Window rRoot, rChild;
+        // get pointer cordinates
+        if ( (XQueryPointer(basedisplay->getXDisplay(), root_window,
+                            &rRoot, &rChild, &x, &y, &wX, &wY, &mask)) != 0 )  {                        
+            return getHead(x, y);
+        }
+    }
+
+    return 0;
+}
+
+/**
+ @return the width of head
+*/
+unsigned int ScreenInfo::getHeadWidth(unsigned int head) const {
+
+    if (hasXinerama()) {
+        if ((signed) head >= xineramaNumHeads) {
+#ifdef DEBUG
+            cerr << __FILE__ << ":" <<__LINE__ << ": " <<
+                "Head: " << head << " doesn't exist!" << endl;
+#endif // DEBUG
+            return xineramaInfos[xineramaNumHeads - 1].width;
+        } else
+            return xineramaInfos[head].width;
+    }
+        
+    return getWidth();
+
+}
+
+/**
+ @return the heigt of head
+*/
+unsigned int ScreenInfo::getHeadHeight(unsigned int head) const {
+
+    if (hasXinerama()) {
+        if ((signed) head >= xineramaNumHeads) {
+#ifdef DEBUG
+            cerr << __FILE__ << ":" <<__LINE__ << ": " <<
+                "Head: " << head << " doesn't exist!" << endl;
+#endif // DEBUG
+            return xineramaInfos[xineramaNumHeads - 1].height;
+        } else
+            return xineramaInfos[head].height;
+    }
+
+    return getHeight();
+}
+
+
+/**
+ @return the X start of head nr head
+*/
+int ScreenInfo::getHeadX(unsigned int head) const {
+    if (hasXinerama()) {
+        if ((signed) head >= xineramaNumHeads) {
+#ifdef DEBUG
+            cerr << __FILE__ << ":" <<__LINE__ << ": " <<
+                "Head: " << head << " doesn't exist!" << endl;
+#endif // DEBUG
+            return xineramaInfos[head = xineramaNumHeads - 1].x_org;
+        } else 
+            return xineramaInfos[head].x_org;
+    }
+
+    return 0;
+}
+
+/**
+ @return the Y start of head
+*/
+int ScreenInfo::getHeadY(unsigned int head) const {
+    if (hasXinerama()) {
+        if ((signed) head >= xineramaNumHeads) {
+#ifdef DEBUG
+            cerr << __FILE__ << ":" <<__LINE__ << ": " <<
+                "Head: " << head << " doesn't exist!" << endl;
+#endif // DEBUG
+            return xineramaInfos[xineramaNumHeads - 1].y_org;
+        } else 
+            return xineramaInfos[head].y_org;
+    }
+
+    return 0;
+}
+
+#endif // XINERAMA
diff --git a/src/ScreenInfo.hh b/src/ScreenInfo.hh
new file mode 100644
index 0000000..b167d47
--- /dev/null
+++ b/src/ScreenInfo.hh
@@ -0,0 +1,84 @@
+// ScreenInfo.hh for fluxbox
+// Copyright (c) 2003 Henrik Kinnunen (fluxgen<at>users.sourceforge.net)
+//
+// from BaseDisplay.hh in Blackbox 0.61.1
+// Copyright (c) 1997 - 2000 Brad Hughes (bhughes at tcac.net)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+// $Id: ScreenInfo.hh,v 1.1 2003/05/10 13:54:29 fluxgen Exp $
+
+#ifndef SCREENINFO_HH
+#define SCREENINFO_HH
+
+#include <X11/Xlib.h>
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif // HAVE_CONFIG_H
+
+#ifdef XINERAMA
+extern  "C" {
+#include <X11/extensions/Xinerama.h>
+}
+#endif // XINERAMA
+
+/// holds information about a screen
+class ScreenInfo {
+public:
+    explicit ScreenInfo(int screen_num);
+    ~ScreenInfo();
+
+    inline Visual *getVisual() const { return visual; }
+    inline Window getRootWindow() const { return root_window; }
+    inline Colormap colormap() const { return m_colormap; }
+
+    inline int getDepth() const { return depth; }
+    inline int getScreenNumber() const { return screen_number; }
+
+    inline unsigned int getWidth() const { return width; }
+    inline unsigned int getHeight() const { return height; }
+
+#ifdef XINERAMA
+    inline bool hasXinerama() const { return m_hasXinerama; }
+    inline int getNumHeads() const { return xineramaNumHeads; }
+    unsigned int getHead(int x, int y) const;
+    unsigned int getCurrHead() const;
+    unsigned int getHeadWidth(unsigned int head) const;
+    unsigned int getHeadHeight(unsigned int head) const;
+    int getHeadX(unsigned int head) const;
+    int getHeadY(unsigned int head) const;
+#endif // XINERAMA
+
+private:
+    Visual *visual;
+    Window root_window;
+    Colormap m_colormap;
+
+    int depth, screen_number;
+    unsigned int width, height;
+#ifdef XINERAMA
+    bool m_hasXinerama;
+    int xineramaMajor, xineramaMinor, xineramaNumHeads, xineramaLastHead;
+    XineramaScreenInfo *xineramaInfos;
+#endif // XINERAMA
+
+};
+
+#endif // SCREENINFO_HH