diff -r 000000000000 -r 2483f517c562 ui/motif/graphics.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ui/motif/graphics.c Sun Jan 21 16:30:18 2024 +0100 @@ -0,0 +1,283 @@ +/* + * 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 +#include +#include +#include + +#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); +}