Better onscreen keyboard button sizing
No longer restricted to "the same as other UI buttons" (e.g., 48x48 default) or "1/4th that size" (e.g., 24x24). Will scale, allowing for larger buttons when appropriate. h/t Anat Caspi for pointing out the continuing issue. Closes https://sourceforge.net/p/tuxpaint/feature-requests/212/
This commit is contained in:
Bill Kendrick
parent
3b027b9a4c
commit
3518433808
4 changed files with 121 additions and 109 deletions
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@ -1,7 +1,7 @@
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/*
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onscreen_keyboard.c
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Copyright (c) 2020
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Copyright (c) 2022
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http://www.tuxpaint.org/
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This program is free software; you can redistribute it and/or modify
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@ -22,6 +22,16 @@
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#include "onscreen_keyboard.h"
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#include "SDL_rotozoom.h"
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#include "SDL_gfxBlitFunc.h"
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#if !defined(_SDL_rotozoom_h) || !defined(_SDL_gfxBlitFunc_h)
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#error "---------------------------------------------------"
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#error "If you installed SDL_gfx from a package, be sure"
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#error "to get the development package, as well!"
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#error "(e.g., 'libsdl-gfx1.2-devel.rpm')"
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#error "---------------------------------------------------"
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#endif
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//#define DEBUG_OSK_COMPOSEMAP
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static SDL_Color def_bgcolor = { 255, 255, 255, 255 };
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@ -57,16 +67,11 @@ static void print_composemap(osk_composenode * composemap, char *sp);
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#endif
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struct osk_keyboard *osk_create(char * layout_name, SDL_Surface * canvas,
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SDL_Surface * LG_button_up, SDL_Surface * LG_button_down,
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SDL_Surface * LG_button_off, SDL_Surface * LG_button_nav,
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SDL_Surface * LG_button_hold,
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SDL_Surface * LG_oskdel, SDL_Surface * LG_osktab, SDL_Surface * LG_oskenter,
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SDL_Surface * LG_oskcapslock, SDL_Surface * LG_oskshift,
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SDL_Surface * SM_button_up, SDL_Surface * SM_button_down,
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SDL_Surface * SM_button_off, SDL_Surface * SM_button_nav,
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SDL_Surface * SM_button_hold,
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SDL_Surface * SM_oskdel, SDL_Surface * SM_osktab, SDL_Surface * SM_oskenter,
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SDL_Surface * SM_oskcapslock, SDL_Surface * SM_oskshift,
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SDL_Surface * BLANK_button_up, SDL_Surface * BLANK_button_down,
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SDL_Surface * BLANK_button_off, SDL_Surface * BLANK_button_nav,
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SDL_Surface * BLANK_button_hold,
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SDL_Surface * BLANK_oskdel, SDL_Surface * BLANK_osktab, SDL_Surface * BLANK_oskenter,
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SDL_Surface * BLANK_oskcapslock, SDL_Surface * BLANK_oskshift,
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int disable_change)
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{
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SDL_Surface * surface;
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@ -77,6 +82,7 @@ struct osk_keyboard *osk_create(char * layout_name, SDL_Surface * canvas,
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SDL_Surface * oskcapslock, * oskshift;
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osk_layout * layout;
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on_screen_keyboard * keyboard;
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int layout_avail_width, layout_avail_height;
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keyboard = malloc(sizeof(on_screen_keyboard));
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@ -100,30 +106,66 @@ struct osk_keyboard *osk_create(char * layout_name, SDL_Surface * canvas,
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printf("w %i, h %i\n", layout->width, layout->height);
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#endif
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if (layout->width * LG_button_up->w >= (canvas->w - 48 * 4) * 0.9 ||
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layout->height * LG_button_up->h >= canvas->h * 0.5) {
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/* Full-size buttons too large, use small buttons */
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button_up = SM_button_up;
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button_down = SM_button_down;
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button_off = SM_button_off;
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button_nav = SM_button_nav;
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button_hold = SM_button_hold;
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oskdel = SM_oskdel;
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osktab = SM_osktab;
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oskenter = SM_oskenter;
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oskcapslock = SM_oskcapslock;
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oskshift = SM_oskshift;
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layout_avail_width = (canvas->w * 0.9);
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layout_avail_height = (canvas->h * 0.5);
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if (layout->width * BLANK_button_up->w >= layout_avail_width || /* Don't allow it to be > 90% of the width of the canvas */
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layout->height * BLANK_button_up->h >= layout_avail_height /* Don't allow it to be > 50% of the height of the canvas */) {
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/* Full-size buttons too large, resize to fit */
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float max_w, max_h;
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float scale_w, scale_h;
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#ifdef DEBUG
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printf("%d x %d layout of %d x %d buttons won't fit within %d x %d pixel area...\n",
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layout->width, layout->height,
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BLANK_button_up->w, BLANK_button_up->h,
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layout_avail_width, layout_avail_height);
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#endif
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max_w = (float) layout_avail_width / (float) layout->width;
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max_h = (float) layout_avail_height / (float) layout->height;
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#ifdef DEBUG
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printf("...want (%d / %d) x (%d x %d) = %.2f x %.2f buttons...\n",
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layout_avail_width, layout->width,
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layout_avail_height, layout->height,
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max_w, max_h);
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#endif
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if (max_w > max_h)
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max_w = max_h;
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if (max_h > max_w)
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max_h = max_w;
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scale_w = (float) max_w / (float) BLANK_button_up->w;
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scale_h = (float) max_h / (float) BLANK_button_up->h;
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#ifdef DEBUG
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printf("...so scaling by w=%.2f & h=%.2f\n",
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scale_w, scale_h);
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#endif
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button_up = zoomSurface(BLANK_button_up, scale_w, scale_h, 1);
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button_down = zoomSurface(BLANK_button_down, scale_w, scale_h, 1);
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button_off = zoomSurface(BLANK_button_off, scale_w, scale_h, 1);
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button_nav = zoomSurface(BLANK_button_nav, scale_w, scale_h, 1);
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button_hold = zoomSurface(BLANK_button_hold, scale_w, scale_h, 1);
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oskdel = zoomSurface(BLANK_oskdel, scale_w, scale_h, 1);
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osktab = zoomSurface(BLANK_osktab, scale_w, scale_h, 1);
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oskenter = zoomSurface(BLANK_oskenter, scale_w, scale_h, 1);
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oskcapslock = zoomSurface(BLANK_oskcapslock, scale_w, scale_h, 1);
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oskshift = zoomSurface(BLANK_oskshift, scale_w, scale_h, 1);
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} else {
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button_up = LG_button_up;
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button_down = LG_button_down;
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button_off = LG_button_off;
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button_nav = LG_button_nav;
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button_hold = LG_button_hold;
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oskdel = LG_oskdel;
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osktab = LG_osktab;
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oskenter = LG_oskenter;
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oskcapslock = LG_oskcapslock;
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oskshift = LG_oskshift;
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button_up = SDL_DisplayFormatAlpha(BLANK_button_up);
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button_down = SDL_DisplayFormatAlpha(BLANK_button_down);
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button_off = SDL_DisplayFormatAlpha(BLANK_button_off);
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button_nav = SDL_DisplayFormatAlpha(BLANK_button_nav);
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button_hold = SDL_DisplayFormatAlpha(BLANK_button_hold);
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oskdel = SDL_DisplayFormatAlpha(BLANK_oskdel);
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osktab = SDL_DisplayFormatAlpha(BLANK_osktab);
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oskenter = SDL_DisplayFormatAlpha(BLANK_oskenter);
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oskcapslock = SDL_DisplayFormatAlpha(BLANK_oskcapslock);
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oskshift = SDL_DisplayFormatAlpha(BLANK_oskshift);
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}
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surface = SDL_CreateRGBSurface(canvas->flags,
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@ -171,26 +213,16 @@ struct osk_keyboard *osk_create(char * layout_name, SDL_Surface * canvas,
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keyboard->kmdf.dead3 = NULL;
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keyboard->kmdf.dead4 = NULL;
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keyboard->LG_button_up = LG_button_up;
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keyboard->LG_button_down = LG_button_down;
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keyboard->LG_button_off = LG_button_off;
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keyboard->LG_button_nav = LG_button_nav;
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keyboard->LG_button_hold = LG_button_hold;
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keyboard->LG_oskdel = LG_oskdel;
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keyboard->LG_osktab = LG_osktab;
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keyboard->LG_oskenter = LG_oskenter;
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keyboard->LG_oskcapslock = LG_oskcapslock;
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keyboard->LG_oskshift = LG_oskshift;
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keyboard->SM_button_up = SM_button_up;
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keyboard->SM_button_down = SM_button_down;
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keyboard->SM_button_off = SM_button_off;
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keyboard->SM_button_nav = SM_button_nav;
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keyboard->SM_button_hold = SM_button_hold;
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keyboard->SM_oskdel = SM_oskdel;
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keyboard->SM_osktab = SM_osktab;
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keyboard->SM_oskenter = SM_oskenter;
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keyboard->SM_oskcapslock = SM_oskcapslock;
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keyboard->SM_oskshift = SM_oskshift;
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keyboard->BLANK_button_up = BLANK_button_up;
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keyboard->BLANK_button_down = BLANK_button_down;
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keyboard->BLANK_button_off = BLANK_button_off;
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keyboard->BLANK_button_nav = BLANK_button_nav;
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keyboard->BLANK_button_hold = BLANK_button_hold;
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keyboard->BLANK_oskdel = BLANK_oskdel;
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keyboard->BLANK_osktab = BLANK_osktab;
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keyboard->BLANK_oskenter = BLANK_oskenter;
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keyboard->BLANK_oskcapslock = BLANK_oskcapslock;
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keyboard->BLANK_oskshift = BLANK_oskshift;
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SDL_FillRect(surface, NULL,
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SDL_MapRGB(surface->format, keyboard->layout->bgcolor.r, keyboard->layout->bgcolor.g,
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@ -1725,18 +1757,12 @@ struct osk_keyboard *osk_clicked(on_screen_keyboard * keyboard, int x, int y)
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new_keyboard =
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osk_create(name, keyboard->canvas_ptr,
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keyboard->LG_button_up, keyboard->LG_button_down,
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keyboard->LG_button_off, keyboard->LG_button_nav,
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keyboard->LG_button_hold,
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keyboard->LG_oskdel, keyboard->LG_osktab,
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keyboard->LG_oskenter, keyboard->LG_oskcapslock,
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keyboard->LG_oskshift,
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keyboard->SM_button_up, keyboard->SM_button_down,
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keyboard->SM_button_off, keyboard->SM_button_nav,
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keyboard->SM_button_hold,
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keyboard->SM_oskdel, keyboard->SM_osktab,
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keyboard->SM_oskenter, keyboard->SM_oskcapslock,
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keyboard->SM_oskshift,
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keyboard->BLANK_button_up, keyboard->BLANK_button_down,
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keyboard->BLANK_button_off, keyboard->BLANK_button_nav,
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keyboard->BLANK_button_hold,
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keyboard->BLANK_oskdel, keyboard->BLANK_osktab,
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keyboard->BLANK_oskenter, keyboard->BLANK_oskcapslock,
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keyboard->BLANK_oskshift,
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keyboard->disable_change);
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free(aux_list_ptr);
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