Tue, 29 Oct 2024 10:37:14 +0100
clear context states before closing a window
/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 2015 Olaf Wintermann. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include <stdio.h> #include <stdlib.h> #include <X11/Intrinsic.h> #include <X11/IntrinsicP.h> #include "graphics.h" #include "container.h" static void ui_drawingarea_expose(Widget widget, XtPointer u, XtPointer c) { UiDrawEvent *drawevent = u; //XmDrawingAreaCallbackStruct *cbs = (XmDrawingAreaCallbackStruct *)c; //XEvent *event = cbs->event; Display *dpy = XtDisplay(widget); UiEvent ev; ev.obj = drawevent->obj; ev.window = drawevent->obj->window; ev.document = drawevent->obj->ctx->document; ev.eventdata = NULL; ev.intval = 0; XtVaGetValues( widget, XmNwidth, &drawevent->gr.g.width, XmNheight, &drawevent->gr.g.height, NULL); XGCValues gcvals; gcvals.foreground = BlackPixelOfScreen(XtScreen(widget)); drawevent->gr.gc = XCreateGC(dpy, XtWindow(widget), (GCForeground), &gcvals); drawevent->callback(&ev, &drawevent->gr.g, drawevent->userdata); } UIWIDGET ui_drawingarea(UiObject *obj, ui_drawfunc f, void *userdata) { UiContainer *ct = uic_get_current_container(obj); int n = 0; Arg args[16]; Widget parent = ct->prepare(ct, args, &n, TRUE); Widget drawingarea = XmCreateDrawingArea(parent, "drawingarea", args, n); if(f) { UiDrawEvent *event = malloc(sizeof(UiDrawEvent)); event->obj = obj; event->callback = f; event->userdata = userdata; event->gr.display = XtDisplay(drawingarea); event->gr.widget = drawingarea; Colormap colormap; XtVaGetValues(drawingarea, XmNcolormap, &colormap, NULL); event->gr.colormap = colormap; XtAddCallback( drawingarea, XmNexposeCallback, ui_drawingarea_expose, event); XtVaSetValues(drawingarea, XmNuserData, event, NULL); } XtManageChild(drawingarea); return drawingarea; } static void ui_drawingarea_input(Widget widget, XtPointer u, XtPointer c) { XmDrawingAreaCallbackStruct *cbs = (XmDrawingAreaCallbackStruct*)c; XEvent *xevent = cbs->event; UiMouseEventData *event = u; if (cbs->reason == XmCR_INPUT) { if (xevent->xany.type == ButtonPress) { UiMouseEvent me; me.x = xevent->xbutton.x; me.y = xevent->xbutton.y; // TODO: configurable double click time me.type = xevent->xbutton.time - event->last_event > 300 ? UI_PRESS : UI_PRESS2; UiEvent e; e.obj = event->obj; e.window = event->obj->window; e.document = event->obj->ctx->document; e.eventdata = &me; e.intval = 0; event->callback(&e, event->userdata); event->last_event = me.type == UI_PRESS2 ? 0 : xevent->xbutton.time; } } } void ui_drawingarea_mousehandler(UiObject *obj, UIWIDGET widget, ui_callback f, void *u) { if(f) { UiMouseEventData *event = malloc(sizeof(UiMouseEventData)); event->obj = obj; event->callback = f; event->userdata = u; event->last_event = 0; XtAddCallback(widget, XmNinputCallback, ui_drawingarea_input, event); } } void ui_drawingarea_getsize(UIWIDGET drawingarea, int *width, int *height) { XtVaGetValues( drawingarea, XmNwidth, width, XmNheight, height, NULL); } void ui_drawingarea_redraw(UIWIDGET drawingarea) { //XClearArea(XtDisplay(drawingarea), drawingarea->core.window, 0, 0, drawingarea->core.width, drawingarea->core.height, True); UiDrawEvent *event; XtVaGetValues(drawingarea, XmNuserData, &event, NULL); ui_drawingarea_expose(drawingarea, event, NULL); } /* -------------------- text layout functions -------------------- */ UiTextLayout* ui_text(UiGraphics *g) { UiTextLayout *text = malloc(sizeof(UiTextLayout)); memset(text, 0, sizeof(UiTextLayout)); text->text = NULL; text->length = 0; text->widget = ((UiXlibGraphics*)g)->widget; text->fontset = NULL; return text; } static void create_default_fontset(UiTextLayout *layout) { char **missing = NULL; int num_missing = 0; char *def = NULL; Display *dpy = XtDisplay(layout->widget); XFontSet fs = XCreateFontSet( dpy, "-dt-interface system-medium-r-normal-s*utf*:," "-misc-liberation sans-medium-r-normal--0-0-0-0-p-0-iso8859-1," "-misc-liberation sans-medium-r-normal--0-0-0-0-p-0-iso8859-10," "-misc-liberation sans-medium-r-normal--0-0-0-0-p-0-iso8859-15," "-misc-liberation sans-medium-r-normal--0-0-0-0-p-0-iso8859-2," "-misc-liberation sans-medium-r-normal--0-0-0-0-p-0-iso8859-3," "-misc-liberation sans-medium-r-normal--0-0-0-0-p-0-iso8859-4," "-misc-liberation sans-medium-r-normal--0-0-0-0-p-0-iso8859-5," "-misc-liberation sans-medium-r-normal--0-0-0-0-p-0-iso8859-9," "-misc-liberation sans-medium-r-normal--0-0-0-0-p-0-koi8-e," "-misc-liberation sans-medium-r-normal--0-0-0-0-p-0-koi8-r," "-misc-liberation sans-medium-r-normal--0-0-0-0-p-0-koi8-ru," "-misc-liberation sans-medium-r-normal--0-0-0-0-p-0-koi8-u," "-misc-liberation sans-medium-r-normal--0-0-0-0-p-0-koi8-uni," "-misc-fixed-medium-r-normal--14-130-75-75-c-140-jisx0208", &missing, &num_missing, &def); layout->fontset = fs; } void ui_text_free(UiTextLayout *text) { // TODO } void ui_text_setstring(UiTextLayout *layout, char *str) { ui_text_setstringl(layout, str, strlen(str)); } void ui_text_setstringl(UiTextLayout *layout, char *str, int len) { layout->text = str; layout->length = len; layout->changed = 1; } void ui_text_setfont(UiTextLayout *layout, char *font, int size) { create_default_fontset(layout);//TODO layout->changed = 1; } void ui_text_getsize(UiTextLayout *layout, int *width, int *height) { if(layout->changed) { XRectangle ext, lext; XmbTextExtents(layout->fontset, layout->text, layout->length, &ext, &lext); layout->width = ext.width; layout->height = ext.height; layout->changed = 0; } *width = layout->width; *height = layout->height; } void ui_text_setwidth(UiTextLayout *layout, int width) { layout->maxwidth = width; } /* -------------------- drawing functions -------------------- */ void ui_graphics_color(UiGraphics *g, int red, int green, int blue) { UiXlibGraphics *gr = (UiXlibGraphics*)g; XColor color; color.flags= DoRed | DoGreen | DoBlue; color.red = red * 257; color.green = green * 257; color.blue = blue * 257; XAllocColor(gr->display, gr->colormap, &color); XSetForeground(gr->display, gr->gc, color.pixel); } void ui_draw_line(UiGraphics *g, int x1, int y1, int x2, int y2) { UiXlibGraphics *gr = (UiXlibGraphics*)g; XDrawLine(gr->display, XtWindow(gr->widget), gr->gc, x1, y1, x2, y2); } void ui_draw_rect(UiGraphics *g, int x, int y, int w, int h, int fill) { UiXlibGraphics *gr = (UiXlibGraphics*)g; if(fill) { XFillRectangle(gr->display, XtWindow(gr->widget), gr->gc, x, y, w, h); } else { XDrawRectangle(gr->display, XtWindow(gr->widget), gr->gc, x, y, w, h); } } void ui_draw_text(UiGraphics *g, int x, int y, UiTextLayout *text) { UiXlibGraphics *gr = (UiXlibGraphics*)g; int width, height; ui_text_getsize(text, &width, &height); if(text->maxwidth > 0) { XRectangle clip; clip.x = x; clip.y = y; clip.width = text->maxwidth; clip.height = height; XSetClipRectangles(gr->display, gr->gc, 0, 0, &clip, 1, Unsorted); } XmbDrawString( gr->display, XtWindow(gr->widget), text->fontset, gr->gc, x, y + height, text->text, text->length); XSetClipMask(gr->display, gr->gc, None); }