mirror of https://github.com/edeproject/ede.git
283 lines
8.5 KiB
C++
283 lines
8.5 KiB
C++
//
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// Screen.hh for pekwm
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// Copyright © 2003-2009 Claes Nästén <me{@}pekdon{.}net>
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//
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// This program is licensed under the GNU GPL.
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// See the LICENSE file for more information.
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//
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif // HAVE_CONFIG_H
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#ifndef _SCREENINFO_HH_
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#define _SCREENINFO_HH_
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#include "pekwm.hh"
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extern "C" {
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#include <X11/Xlib.h>
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#ifdef HAVE_XINERAMA
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#include <X11/extensions/Xinerama.h>
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#endif // HAVE_XINERAMA
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extern bool xerrors_ignore; /**< If true, ignore X errors. */
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extern unsigned int xerrors_count; /**< Number of X errors occured. */
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#ifdef DEBUG
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#define setXErrorsIgnore(X) xerrors_ignore = (X)
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#else // ! DEBUG
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#define setXErrorsIgnore(X)
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#endif // DEBUG
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}
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#include <vector>
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#include <list>
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#include <map>
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/**
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* Class holding information about screen edge allocation.
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*/
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class Strut {
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public:
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Strut(long l=0, long r=0, long t=0, long b=0, int nhead=-1)
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: left(l), right(r), top(t), bottom(b), head(nhead) { };
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~Strut(void) { };
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public: // member variables
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long left; /**< Pixels allocated on the left of the head. */
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long right; /**<Pixels allocated on the right of the head. */
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long top; /**< Pixels allocated on the top of the head.*/
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long bottom; /**< Pixels allocated on the bottom of the head.*/
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int head; /**< Which head is the strut valid for */
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/** Assign values from array of longs. */
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inline void operator=(const long *s) {
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left = s[0];
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right = s[1];
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top = s[2];
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bottom = s[3];
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}
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};
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//! Output head, used to share same code with Xinerama and RandR
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class Head {
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public:
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Head(int nx, int ny, uint nwidth, uint nheight) : x(nx), y(ny), width(nwidth), height(nheight) { };
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public:
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int x;
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int y;
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uint width;
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uint height;
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Strut strut;
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};
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//! @brief Display information class.
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class PScreen
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{
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//! Bits 1-15 are modifier masks, but bits 13 and 14 aren't named in X11/X.h.
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static const unsigned KbdLayoutMask1 = 1<<13;
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static const unsigned KbdLayoutMask2 = 1<<14;
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public:
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//! @brief Visual wrapper class.
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class PVisual {
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public:
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PVisual(Visual *x_visual);
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~PVisual(void);
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//! @brief Returns pointer to X Visual.
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inline Visual *getXVisual(void) { return _x_visual; }
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inline int getRShift(void) const { return _r_shift; }
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inline int getRPrec(void) const { return _r_prec; }
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inline int getGShift(void) const { return _g_shift; }
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inline int getGPrec(void) const { return _g_prec; }
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inline int getBShift(void) const { return _b_shift; }
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inline int getBPrec(void) const { return _b_prec; }
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private:
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void getShiftPrecFromMask(ulong mask, int &shift, int &prec);
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private:
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Visual *_x_visual; //!< Pointer to X Visual.
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int _r_shift; //!< Red shift, alternative red_mask representation.
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int _r_prec; //!< Red prec, alternative red_mask representation.
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int _g_shift; //!< Green shift, alternative green_mask representation.
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int _g_prec; //!< Green prec, alternative green_mask representation.
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int _b_shift; //!< Blue shift, alternative blue_mask representation.
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int _b_prec; //!< Blue prec, alternative blue_mask representation.
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};
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PScreen(Display *dpy, bool honour_randr = true);
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~PScreen(void);
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static PScreen* instance(void) { return _instance; }
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inline static Display* getDpy(void) { return _dpy; }
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inline int getScreenNum(void) const { return _screen; }
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inline Window getRoot(void) const { return _root; }
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const Geometry &getScreenGeometry(void) const { return _screen_gm; }
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inline uint getWidth(void) const { return _screen_gm.width; }
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inline uint getHeight(void) const { return _screen_gm.height; }
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inline int getDepth(void) const { return _depth; }
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inline PScreen::PVisual *getVisual(void) { return _visual; }
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inline GC getGC(void) { return DefaultGC(_dpy, _screen); }
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inline Colormap getColormap(void) const { return _colormap; }
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inline ulong getWhitePixel(void)
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const { return WhitePixel(_dpy, _screen); }
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inline ulong getBlackPixel(void)
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const { return BlackPixel(_dpy, _screen); }
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/**
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* Remove state modifiers such as NumLock from state.
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*/
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static void stripStateModifiers(unsigned int *state) {
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*state &= ~(_num_lock | _scroll_lock | LockMask | KbdLayoutMask1 | KbdLayoutMask2);
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}
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/**
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* Remove button modifiers from state.
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*/
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static void stripButtonModifiers(unsigned int *state) {
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*state &= ~(Button1Mask | Button2Mask | Button3Mask | Button4Mask | Button5Mask);
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}
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void setLockKeys(void);
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inline uint getNumLock(void) const { return _num_lock; }
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inline uint getScrollLock(void) const { return _scroll_lock; }
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inline bool hasExtensionShape(void) const { return _has_extension_shape; }
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inline int getEventShape(void) const { return _event_shape; }
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void updateGeometry(uint width, uint height);
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#ifdef HAVE_XRANDR
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inline bool hasExtensionXRandr(void) const { return _has_extension_xrandr; }
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inline int getEventXRandr(void) const { return _event_xrandr; }
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#endif // HAVE_XRANDR
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bool getNextEvent(XEvent &ev);
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bool grabServer(void);
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bool ungrabServer(bool sync);
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bool grabKeyboard(Window win);
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bool ungrabKeyboard(void);
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bool grabPointer(Window win, uint event_mask, Cursor cursor);
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bool ungrabPointer(void);
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uint getNearestHead(int x, int y);
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uint getCurrHead(void);
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bool getHeadInfo(uint head, Geometry &head_info);
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Geometry getHeadGeometry(uint head);
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void getHeadInfoWithEdge(uint head, Geometry &head_info);
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inline int getNumHeads(void) const { return _heads.size(); }
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inline Time getLastEventTime(void) const { return _last_event_time; }
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inline void setLastEventTime(Time t) { _last_event_time = t; }
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inline Window getLastClickID(void) { return _last_click_id; }
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inline void setLastClickID(Window id) { _last_click_id = id; }
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inline Time getLastClickTime(uint button) {
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if (button < BUTTON_NO) {
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return _last_click_time[button];
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}
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return 0;
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}
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inline void setLastClickTime(uint button, Time time) {
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if (button < BUTTON_NO) {
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_last_click_time[button] = time;
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}
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}
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inline bool isDoubleClick(Window id, uint button, Time time, Time dc_time) {
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if ((_last_click_id == id) &&
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((time - getLastClickTime(button)) < dc_time)) {
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return true;
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}
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return false;
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}
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void getMousePosition(int &x, int &y);
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uint getButtonFromState(uint state);
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void addStrut(Strut *strut);
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void removeStrut(Strut *rem_strut);
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void updateStrut(void);
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inline Strut *getStrut(void) { return &_strut; }
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uint getMaskFromKeycode(KeyCode keycode);
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KeyCode getKeycodeFromMask(uint mask);
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inline static void removeMotionEvents(void) {
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XEvent xev;
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while (XCheckMaskEvent(_dpy, PointerMotionMask, &xev))
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;
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}
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public:
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static const uint MODIFIER_TO_MASK[]; /**< Modifier from (XModifierKeymap) to mask table. */
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static const uint MODIFIER_TO_MASK_NUM; /**< Number of entries in MODIFIER_TO_MASK. */
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private:
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// squared distance because computing with sqrt is expensive
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// gets the squared distance between 2 points
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inline uint calcDistance(int x1, int y1, int x2, int y2) {
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return (x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2);
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}
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// gets the squared distance between 2 points with either x or y the same
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inline uint calcDistance(int p1, int p2) { return (p1 - p2) * (p1 - p2); }
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void initHeads(void);
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void initHeadsRandr(void);
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void initHeadsXinerama(void);
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private:
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static Display *_dpy;
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bool _honour_randr; /**< Boolean flag if randr should be honoured. */
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int _fd;
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int _screen, _depth;
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Geometry _screen_gm; /**< Screen geometry, no head information. */
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Window _root;
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PScreen::PVisual *_visual;
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Colormap _colormap;
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XModifierKeymap *_modifier_map; /**< Key to modifier mappings. */
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static uint _num_lock;
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static uint _scroll_lock;
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bool _has_extension_shape;
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int _event_shape;
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bool _has_extension_xinerama;
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bool _has_extension_xrandr;
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int _event_xrandr;
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std::vector<Head> _heads; //! Array of head information
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uint _last_head; //! Last accessed head
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uint _server_grabs;
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Time _last_event_time;
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// information for dobule clicks
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Window _last_click_id;
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Time _last_click_time[BUTTON_NO - 1];
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Strut _strut;
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std::list<Strut*> _strut_list;
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static PScreen *_instance;
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};
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#endif // _SCREENINFO_HH_
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