Intermediate commit: Can draw some border, but still messy proof of concept code.
This commit is contained in:
Michael Stapelberg
parent
9a8cef772b
commit
1276de8974
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@ -0,0 +1,9 @@
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/*
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* This file defines all data structures used by i3
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*
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*/
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typedef struct Font {
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char *name;
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int height;
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} Font;
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@ -0,0 +1,592 @@
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#include <stdio.h>
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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#include <xcb/xcb.h>
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#include "xcb_wm.h"
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#include "xcb_aux.h"
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#include "data.h"
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Font myfont;
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static const int TOP = 20;
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static const int LEFT = 5;
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static const int BOTTOM = 5;
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static const int RIGHT = 5;
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table_t *byChild = 0;
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table_t *byParent = 0;
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static const char *labelError[] = {
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"Success",
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"BadRequest",
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"BadValue",
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"BadWindow",
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"BadPixmap",
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"BadAtom",
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"BadCursor",
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"BadFont",
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"BadMatch",
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"BadDrawable",
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"BadAccess",
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"BadAlloc",
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"BadColor",
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"BadGC",
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"BadIDChoice",
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"BadName",
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"BadLength",
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"BadImplementation",
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};
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static const char *labelRequest[] = {
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"no request",
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"CreateWindow",
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"ChangeWindowAttributes",
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"GetWindowAttributes",
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"DestroyWindow",
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"DestroySubwindows",
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"ChangeSaveSet",
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"ReparentWindow",
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"MapWindow",
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"MapSubwindows",
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"UnmapWindow",
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"UnmapSubwindows",
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"ConfigureWindow",
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"CirculateWindow",
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"GetGeometry",
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"QueryTree",
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"InternAtom",
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"GetAtomName",
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"ChangeProperty",
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"DeleteProperty",
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"GetProperty",
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"ListProperties",
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"SetSelectionOwner",
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"GetSelectionOwner",
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"ConvertSelection",
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"SendEvent",
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"GrabPointer",
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"UngrabPointer",
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"GrabButton",
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"UngrabButton",
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"ChangeActivePointerGrab",
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"GrabKeyboard",
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"UngrabKeyboard",
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"GrabKey",
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"UngrabKey",
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"AllowEvents",
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"GrabServer",
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"UngrabServer",
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"QueryPointer",
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"GetMotionEvents",
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"TranslateCoords",
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"WarpPointer",
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"SetInputFocus",
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"GetInputFocus",
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"QueryKeymap",
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"OpenFont",
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"CloseFont",
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"QueryFont",
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"QueryTextExtents",
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"ListFonts",
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"ListFontsWithInfo",
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"SetFontPath",
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"GetFontPath",
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"CreatePixmap",
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"FreePixmap",
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"CreateGC",
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"ChangeGC",
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"CopyGC",
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"SetDashes",
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"SetClipRectangles",
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"FreeGC",
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"ClearArea",
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"CopyArea",
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"CopyPlane",
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"PolyPoint",
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"PolyLine",
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"PolySegment",
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"PolyRectangle",
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"PolyArc",
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"FillPoly",
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"PolyFillRectangle",
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"PolyFillArc",
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"PutImage",
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"GetImage",
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"PolyText",
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"PolyText",
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"ImageText",
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"ImageText",
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"CreateColormap",
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"FreeColormap",
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"CopyColormapAndFree",
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"InstallColormap",
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"UninstallColormap",
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"ListInstalledColormaps",
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"AllocColor",
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"AllocNamedColor",
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"AllocColorCells",
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"AllocColorPlanes",
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"FreeColors",
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"StoreColors",
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"StoreNamedColor",
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"QueryColors",
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"LookupColor",
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"CreateCursor",
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"CreateGlyphCursor",
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"FreeCursor",
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"RecolorCursor",
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"QueryBestSize",
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"QueryExtension",
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"ListExtensions",
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"ChangeKeyboardMapping",
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"GetKeyboardMapping",
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"ChangeKeyboardControl",
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"GetKeyboardControl",
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"Bell",
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"ChangePointerControl",
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"GetPointerControl",
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"SetScreenSaver",
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"GetScreenSaver",
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"ChangeHosts",
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"ListHosts",
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"SetAccessControl",
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"SetCloseDownMode",
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"KillClient",
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"RotateProperties",
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"ForceScreenSaver",
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"SetPointerMapping",
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"GetPointerMapping",
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"SetModifierMapping",
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"GetModifierMapping",
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"major 120",
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"major 121",
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"major 122",
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"major 123",
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"major 124",
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"major 125",
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"major 126",
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"NoOperation",
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};
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static const char *labelEvent[] = {
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"error",
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"reply",
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"KeyPress",
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"KeyRelease",
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"ButtonPress",
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"ButtonRelease",
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"MotionNotify",
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"EnterNotify",
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"LeaveNotify",
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"FocusIn",
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"FocusOut",
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"KeymapNotify",
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"Expose",
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"GraphicsExpose",
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"NoExpose",
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"VisibilityNotify",
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"CreateNotify",
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"DestroyNotify",
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"UnmapNotify",
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"MapNotify",
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"MapRequest",
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"ReparentNotify",
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"ConfigureNotify",
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"ConfigureRequest",
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"GravityNotify",
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"ResizeRequest",
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"CirculateNotify",
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"CirculateRequest",
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"PropertyNotify",
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"SelectionClear",
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"SelectionRequest",
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"SelectionNotify",
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"ColormapNotify",
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"ClientMessage",
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"MappingNotify",
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};
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static const char *labelSendEvent[] = {
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"",
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" (from SendEvent)",
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};
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/*
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*
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* TODO: what exactly does this, what happens if we leave stuff out?
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*
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*/
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void manage_window(xcb_property_handlers_t *prophs, xcb_connection_t *c, xcb_window_t window, window_attributes_t wa)
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{
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printf("managing window.\n");
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xcb_drawable_t d = { window };
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xcb_get_geometry_cookie_t geomc;
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xcb_get_geometry_reply_t *geom;
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xcb_get_window_attributes_reply_t *attr = 0;
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if(wa.tag == TAG_COOKIE)
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{
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attr = xcb_get_window_attributes_reply(c, wa.u.cookie, 0);
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if(!attr)
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return;
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if(attr->map_state != XCB_MAP_STATE_VIEWABLE)
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{
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printf("Window 0x%08x is not mapped. Ignoring.\n", window);
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free(attr);
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return;
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}
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wa.tag = TAG_VALUE;
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wa.u.override_redirect = attr->override_redirect;
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}
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if(!wa.u.override_redirect && table_get(byChild, window))
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{
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printf("Window 0x%08x already managed. Ignoring.\n", window);
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free(attr);
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return;
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}
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if(wa.u.override_redirect)
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{
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printf("Window 0x%08x has override-redirect set. Ignoring.\n", window);
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free(attr);
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return;
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}
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geomc = xcb_get_geometry(c, d);
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if(!attr)
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{
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wa.tag = TAG_COOKIE;
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wa.u.cookie = xcb_get_window_attributes(c, window);
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attr = xcb_get_window_attributes_reply(c, wa.u.cookie, 0);
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}
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geom = xcb_get_geometry_reply(c, geomc, 0);
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if(attr && geom)
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{
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reparent_window(c, window, attr->visual, geom->root, geom->depth, geom->x, geom->y, geom->width, geom->height);
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xcb_property_changed(prophs, XCB_PROPERTY_NEW_VALUE, window, WM_NAME);
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}
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free(attr);
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free(geom);
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}
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static int addClientWindow(xcb_window_t child, xcb_window_t parent, xcb_gcontext_t titlegc)
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{
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int success;
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client_window_t *record = malloc(sizeof(client_window_t));
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assert(record);
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record->child = child;
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record->parent = parent;
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record->name_len = 0;
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record->name = 0;
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record->titlegc = titlegc;
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success = table_put(byParent, parent, record) &&
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table_put(byChild, child, record);
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assert(success);
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return 1;
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}
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void reparent_window(xcb_connection_t *conn, xcb_window_t child,
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xcb_visualid_t visual, xcb_window_t root, uint8_t depth,
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int16_t x, int16_t y, uint16_t width, uint16_t height)
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{
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xcb_window_t window;
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xcb_drawable_t drawable;
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uint32_t mask = 0;
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uint32_t values[3];
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xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
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xcb_gcontext_t titlegc;
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window = xcb_generate_id(conn);
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/* TODO: what do these mean? */
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mask |= XCB_CW_BACK_PIXEL;
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values[0] = root_screen->white_pixel;
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mask |= XCB_CW_OVERRIDE_REDIRECT;
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values[1] = 1;
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mask |= XCB_CW_EVENT_MASK;
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values[2] = XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE
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| XCB_EVENT_MASK_EXPOSURE /* | XCB_EVENT_MASK_ENTER_WINDOW | XCB_EVENT_MASK_LEAVE_WINDOW */;
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printf("Reparenting 0x%08x under 0x%08x.\n", child, window);
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/* Yo dawg, I heard you like windows, so I create a window around your window… */
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xcb_create_window(conn,
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depth,
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window,
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root,
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x,
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y,
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width + LEFT + RIGHT,
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height + TOP + BOTTOM,
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/* border_width */ 0,
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XCB_WINDOW_CLASS_INPUT_OUTPUT,
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visual,
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mask,
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values);
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xcb_change_save_set(conn, XCB_SET_MODE_INSERT, child);
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/* Map the window on the screen (= make it visible) */
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xcb_map_window(conn, window);
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titlegc = xcb_generate_id(conn);
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mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_FONT;
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#if 0
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values[0] = root_screen->black_pixel;
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values[1] = root_screen->white_pixel;
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#endif
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xcb_colormap_t colormapId = xcb_generate_id (conn);
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xcb_create_colormap (conn, XCB_COLORMAP_ALLOC_NONE, colormapId, window, root_screen->root_visual );
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xcb_alloc_color_reply_t *reply = xcb_alloc_color_reply (conn,
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xcb_alloc_color (conn,
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colormapId,
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0,
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0,
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65535),
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NULL );
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if (!reply) {
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printf("color fail\n");
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return;
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}
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xcb_font_t font = xcb_generate_id (conn);
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char *font_name = "-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso8859-1";
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xcb_void_cookie_t fontCookie = xcb_open_font_checked (conn,
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font,
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strlen (font_name),
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font_name );
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values[0] = root_screen->black_pixel;
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values[1] = reply->pixel;
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values[2] = font;
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drawable = window;
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/* Create a new graphics context */
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xcb_create_gc(conn, titlegc, drawable, mask, values);
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/* Change color to something different, just to test */
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values[1] = root_screen->white_pixel;
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xcb_change_gc(conn, titlegc, mask, values);
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/* TODO: utf8? */
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char *label = "i3 rocks :>";
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xcb_void_cookie_t textCookie = xcb_image_text_8_checked (conn,
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strlen (label),
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window,
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titlegc,
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2, 15,
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label );
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/* add the title context as a child for the window */
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addClientWindow(child, window, titlegc);
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/* Moves the original window into the new frame we've created for it */
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xcb_reparent_window(conn, child, window, LEFT - 1, TOP - 1);
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/* We are interested in property changes */
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mask = XCB_CW_EVENT_MASK;
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values[0] = XCB_EVENT_MASK_PROPERTY_CHANGE | XCB_EVENT_MASK_STRUCTURE_NOTIFY;
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xcb_change_window_attributes(conn, child, mask, values);
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xcb_flush(conn);
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}
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int format_event(xcb_generic_event_t *e)
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{
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uint8_t sendEvent;
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uint16_t seqnum;
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sendEvent = (e->response_type & 0x80) ? 1 : 0;
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e->response_type &= ~0x80;
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seqnum = *((uint16_t *) e + 1);
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switch(e->response_type)
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{
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case 0:
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printf("Error %s on seqnum %d (%s).\n",
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labelError[*((uint8_t *) e + 1)],
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seqnum,
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labelRequest[*((uint8_t *) e + 10)]);
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break;
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default:
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printf("Event %s following seqnum %d%s.\n",
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labelEvent[e->response_type],
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seqnum,
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labelSendEvent[sendEvent]);
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break;
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case XCB_KEYMAP_NOTIFY:
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printf("Event %s%s.\n",
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labelEvent[e->response_type],
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labelSendEvent[sendEvent]);
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break;
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}
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fflush(stdout);
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return 1;
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}
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static int handleEvent(void *ignored, xcb_connection_t *c, xcb_generic_event_t *e)
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{
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return format_event(e);
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}
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static void redrawWindow(xcb_connection_t *c, client_window_t *client)
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{
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printf("redrawing window.\n");
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xcb_drawable_t d = { client->parent };
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if(!client->name_len)
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return;
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xcb_clear_area(c, 0, d, 0, 0, 0, 0);
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xcb_image_text_8(c, client->name_len, d, client->titlegc,
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LEFT - 1, TOP - 4, client->name);
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xcb_flush(c);
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}
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int handle_map_notify_event(void *prophs, xcb_connection_t *c, xcb_map_notify_event_t *e)
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{
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window_attributes_t wa = { TAG_VALUE };
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wa.u.override_redirect = e->override_redirect;
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printf("MapNotify for 0x%08x.\n", e->window);
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manage_window(prophs, c, e->window, wa);
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return 1;
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}
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int handle_unmap_notify_event(void *data, xcb_connection_t *c, xcb_unmap_notify_event_t *e)
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{
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client_window_t *client = table_remove(byChild, e->event);
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xcb_window_t root;
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printf("UnmapNotify for 0x%08x (received from 0x%08x): ", e->window, e->event);
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if(!client)
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{
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printf("not a managed window. Ignoring.\n");
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return 0;
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}
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root = xcb_setup_roots_iterator(xcb_get_setup(c)).data->root;
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printf("child of 0x%08x.\n", client->parent);
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xcb_reparent_window(c, client->child, root, 0, 0);
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xcb_destroy_window(c, client->parent);
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xcb_flush(c);
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table_remove(byParent, client->parent);
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free(client);
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return 1;
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}
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static int handleExposeEvent(void *data, xcb_connection_t *c, xcb_expose_event_t *e)
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{
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printf("exposeevent\n");
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client_window_t *client = table_get(byParent, e->window);
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if(!client || e->count != 0)
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return 1;
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redrawWindow(c, client);
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return 1;
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}
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void manage_existing_windows(xcb_connection_t *c, xcb_property_handlers_t *prophs, xcb_window_t root)
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{
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xcb_query_tree_cookie_t wintree;
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xcb_query_tree_reply_t *rep;
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int i, len;
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xcb_window_t *children;
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xcb_get_window_attributes_cookie_t *cookies;
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|
||||
wintree = xcb_query_tree(c, root);
|
||||
rep = xcb_query_tree_reply(c, wintree, 0);
|
||||
if(!rep)
|
||||
return;
|
||||
len = xcb_query_tree_children_length(rep);
|
||||
cookies = malloc(len * sizeof(*cookies));
|
||||
if(!cookies)
|
||||
{
|
||||
free(rep);
|
||||
return;
|
||||
}
|
||||
children = xcb_query_tree_children(rep);
|
||||
for(i = 0; i < len; ++i)
|
||||
cookies[i] = xcb_get_window_attributes(c, children[i]);
|
||||
for(i = 0; i < len; ++i)
|
||||
{
|
||||
window_attributes_t wa = { TAG_COOKIE, { cookies[i] } };
|
||||
manage_window(prophs, c, children[i], wa);
|
||||
}
|
||||
free(rep);
|
||||
}
|
||||
|
||||
int main() {
|
||||
xcb_connection_t *c;
|
||||
xcb_event_handlers_t evenths;
|
||||
xcb_property_handlers_t prophs;
|
||||
xcb_window_t root;
|
||||
|
||||
int screens;
|
||||
|
||||
memset(&evenths, 0, sizeof(xcb_event_handlers_t));
|
||||
memset(&prophs, 0, sizeof(xcb_property_handlers_t));
|
||||
|
||||
|
||||
byChild = alloc_table();
|
||||
byParent = alloc_table();
|
||||
|
||||
c = xcb_connect(NULL, &screens);
|
||||
|
||||
printf("x screen is %d\n", screens);
|
||||
|
||||
/* Font loading */
|
||||
|
||||
char *pattern = "-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso8859-1";
|
||||
|
||||
xcb_list_fonts_with_info_cookie_t cookie = xcb_list_fonts_with_info(c, 1, strlen(pattern), pattern);
|
||||
xcb_list_fonts_with_info_reply_t *reply = xcb_list_fonts_with_info_reply(c, cookie, NULL);
|
||||
if (!reply) {
|
||||
printf("Could not load font\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
myfont.name = strdup(xcb_list_fonts_with_info_name(reply));
|
||||
myfont.height = reply->font_ascent + reply->font_descent;
|
||||
|
||||
|
||||
xcb_event_handlers_init(c, &evenths);
|
||||
int i;
|
||||
for(i = 2; i < 128; ++i)
|
||||
xcb_event_set_handler(&evenths, i, handleEvent, 0);
|
||||
for(i = 0; i < 256; ++i)
|
||||
xcb_event_set_error_handler(&evenths, i, (xcb_generic_error_handler_t) handleEvent, 0);
|
||||
|
||||
/* Expose = an Application should redraw itself. That is, we have to redraw our
|
||||
* contents (= Bars) */
|
||||
xcb_event_set_expose_handler(&evenths, handleExposeEvent, 0);
|
||||
|
||||
xcb_event_set_unmap_notify_handler(&evenths, handle_unmap_notify_event, 0);
|
||||
|
||||
xcb_property_handlers_init(&prophs, &evenths);
|
||||
xcb_event_set_map_notify_handler(&evenths, handle_map_notify_event, &prophs);
|
||||
|
||||
|
||||
root = xcb_aux_get_screen(c, screens)->root;
|
||||
|
||||
{
|
||||
uint32_t mask = XCB_CW_EVENT_MASK;
|
||||
uint32_t values[] = { XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_PROPERTY_CHANGE };
|
||||
xcb_change_window_attributes(c, root, mask, values);
|
||||
}
|
||||
|
||||
xcb_flush(c);
|
||||
|
||||
manage_existing_windows(c, &prophs, root);
|
||||
|
||||
xcb_event_wait_for_event_loop(&evenths);
|
||||
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue