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authorVincent Sanders <vince@kyllikki.org>2016-05-05 22:28:51 +0100
committerVincent Sanders <vince@kyllikki.org>2016-05-15 13:44:34 +0100
commitd21447d096a320a08b3efb2b8768fad0dcdcfd64 (patch)
tree1a83814b7c9e94b2f13c473261f23dd3a17dee64 /framebuffer/fbtk/text.c
parent2cbb337756d9af5bda4d594964d446439f602551 (diff)
downloadnetsurf-d21447d096a320a08b3efb2b8768fad0dcdcfd64.tar.gz
netsurf-d21447d096a320a08b3efb2b8768fad0dcdcfd64.tar.bz2
move frontends into sub directory
Diffstat (limited to 'framebuffer/fbtk/text.c')
-rw-r--r--framebuffer/fbtk/text.c640
1 files changed, 0 insertions, 640 deletions
diff --git a/framebuffer/fbtk/text.c b/framebuffer/fbtk/text.c
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--- a/framebuffer/fbtk/text.c
+++ /dev/null
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-/*
- * Copyright 2010 Vincent Sanders <vince@simtec.co.uk>
- *
- * Framebuffer windowing toolkit scrollbar widgets.
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * NetSurf is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * NetSurf is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <libnsfb.h>
-#include <libnsfb_plot.h>
-#include <libnsfb_plot_util.h>
-#include <libnsfb_event.h>
-
-#include "utils/log.h"
-#include "desktop/browser.h"
-#include "desktop/plotters.h"
-
-#include "framebuffer/gui.h"
-#include "framebuffer/fbtk.h"
-#include "framebuffer/font.h"
-#include "framebuffer/framebuffer.h"
-#include "framebuffer/image_data.h"
-
-#include "widget.h"
-
-//#define TEXT_WIDGET_BORDER 3 /**< The pixel border round a text widget. */
-
-/* Lighten a colour by taking seven eights of each channel's intensity
- * and adding a full eighth
- */
-#define brighten_colour(c1) \
- (((((7 * ((c1 >> 16) & 0xff)) >> 3) + 32) << 16) | \
- ((((7 * ((c1 >> 8) & 0xff)) >> 3) + 32) << 8) | \
- ((((7 * (c1 & 0xff)) >> 3) + 32) << 0))
-
-/* Convert pixels to points, assuming a DPI of 90 */
-#define px_to_pt(x) (((x) * 72) / FBTK_DPI)
-
-/* Get a font style for a text input */
-static inline void
-fb_text_font_style(fbtk_widget_t *widget, int *font_height, int *padding,
- plot_font_style_t *font_style)
-{
- if (widget->u.text.outline)
- *padding = 1;
- else
- *padding = 0;
-
-#ifdef FB_USE_FREETYPE
- *padding += widget->height / 6;
- *font_height = widget->height - *padding - *padding;
-#else
- *font_height = FB_FONT_HEIGHT;
- *padding = (widget->height - *padding - *font_height) / 2;
-#endif
-
- font_style->family = PLOT_FONT_FAMILY_SANS_SERIF;
- font_style->size = px_to_pt(*font_height * FONT_SIZE_SCALE);
- font_style->weight = 400;
- font_style->flags = FONTF_NONE;
- font_style->background = widget->bg;
- font_style->foreground = widget->fg;
-}
-
-/** Text redraw callback.
- *
- * Called when a text widget requires redrawing.
- *
- * @param widget The widget to be redrawn.
- * @param cbi The callback parameters.
- * @return The callback result.
- */
-static int
-fb_redraw_text(fbtk_widget_t *widget, fbtk_callback_info *cbi )
-{
- nsfb_bbox_t bbox;
- nsfb_bbox_t rect;
- fbtk_widget_t *root;
- plot_font_style_t font_style;
- int caret_x, caret_y, caret_h;
- int fh;
- int padding;
- int scroll = 0;
- bool caret = false;
-
- fb_text_font_style(widget, &fh, &padding, &font_style);
-
- if (fbtk_get_caret(widget, &caret_x, &caret_y, &caret_h)) {
- caret = true;
- }
-
- root = fbtk_get_root_widget(widget);
-
- fbtk_get_bbox(widget, &bbox);
-
- rect = bbox;
-
- nsfb_claim(root->u.root.fb, &bbox);
-
- /* clear background */
- if ((widget->bg & 0xFF000000) != 0) {
- /* transparent polygon filling isnt working so fake it */
- nsfb_plot_rectangle_fill(root->u.root.fb, &bbox, widget->bg);
- }
-
- /* widget can have a single pixel outline border */
- if (widget->u.text.outline) {
- rect.x1--;
- rect.y1--;
- nsfb_plot_rectangle(root->u.root.fb, &rect, 1,
- 0x00000000, false, false);
- }
-
- if (widget->u.text.text != NULL) {
- int x = bbox.x0 + padding;
- int y = bbox.y0 + ((fh * 3 + 2) / 4) + padding;
-
-#ifdef FB_USE_FREETYPE
- /* Freetype renders text higher */
- y += 1;
-#endif
-
- if (caret && widget->width - padding - padding < caret_x) {
- scroll = (widget->width - padding - padding) - caret_x;
- x += scroll;
- }
-
- /* Call the fb text plotting, baseline is 3/4 down the font */
- fb_plotters.text(x, y, widget->u.text.text,
- widget->u.text.len, &font_style);
- }
-
- if (caret) {
- /* This widget has caret, so render it */
- nsfb_t *nsfb = fbtk_get_nsfb(widget);
- nsfb_bbox_t line;
- nsfb_plot_pen_t pen;
-
- line.x0 = bbox.x0 + caret_x + scroll;
- line.y0 = bbox.y0 + caret_y;
- line.x1 = bbox.x0 + caret_x + scroll;
- line.y1 = bbox.y0 + caret_y + caret_h;
-
- pen.stroke_type = NFSB_PLOT_OPTYPE_SOLID;
- pen.stroke_width = 1;
- pen.stroke_colour = 0xFF0000FF;
-
- nsfb_plot_line(nsfb, &line, &pen);
- }
-
- nsfb_update(root->u.root.fb, &bbox);
-
- return 0;
-}
-
-/** Text destroy callback.
- *
- * Called when a text widget is destroyed.
- *
- * @param widget The widget being destroyed.
- * @param cbi The callback parameters.
- * @return The callback result.
- */
-static int fb_destroy_text(fbtk_widget_t *widget, fbtk_callback_info *cbi)
-{
- if ((widget == NULL) || (widget->type != FB_WIDGET_TYPE_TEXT)) {
- return 0;
- }
-
- if (widget->u.text.text != NULL) {
- free(widget->u.text.text);
- }
-
- return 0;
-}
-
-/** Text button redraw callback.
- *
- * Called when a text widget requires redrawing.
- *
- * @param widget The widget to be redrawn.
- * @param cbi The callback parameters.
- * @return The callback result.
- */
-static int
-fb_redraw_text_button(fbtk_widget_t *widget, fbtk_callback_info *cbi )
-{
- nsfb_bbox_t bbox;
- nsfb_bbox_t rect;
- nsfb_bbox_t line;
- nsfb_plot_pen_t pen;
- plot_font_style_t font_style;
- int fh;
- int border;
- fbtk_widget_t *root = fbtk_get_root_widget(widget);
-
- fb_text_font_style(widget, &fh, &border, &font_style);
-
- pen.stroke_type = NFSB_PLOT_OPTYPE_SOLID;
- pen.stroke_width = 1;
- pen.stroke_colour = brighten_colour(widget->bg);
-
- fbtk_get_bbox(widget, &bbox);
-
- rect = bbox;
- rect.x1--;
- rect.y1--;
-
- nsfb_claim(root->u.root.fb, &bbox);
-
- /* clear background */
- if ((widget->bg & 0xFF000000) != 0) {
- /* transparent polygon filling isnt working so fake it */
- nsfb_plot_rectangle_fill(root->u.root.fb, &rect, widget->bg);
- }
-
- if (widget->u.text.outline) {
- line.x0 = rect.x0;
- line.y0 = rect.y0;
- line.x1 = rect.x0;
- line.y1 = rect.y1;
- nsfb_plot_line(root->u.root.fb, &line, &pen);
- line.x0 = rect.x0;
- line.y0 = rect.y0;
- line.x1 = rect.x1;
- line.y1 = rect.y0;
- nsfb_plot_line(root->u.root.fb, &line, &pen);
- pen.stroke_colour = darken_colour(widget->bg);
- line.x0 = rect.x0;
- line.y0 = rect.y1;
- line.x1 = rect.x1;
- line.y1 = rect.y1;
- nsfb_plot_line(root->u.root.fb, &line, &pen);
- line.x0 = rect.x1;
- line.y0 = rect.y0;
- line.x1 = rect.x1;
- line.y1 = rect.y1;
- nsfb_plot_line(root->u.root.fb, &line, &pen);
- }
-
- if (widget->u.text.text != NULL) {
- /* Call the fb text plotting, baseline is 3/4 down the font */
- fb_plotters.text(bbox.x0 + border,
- bbox.y0 + ((fh * 3) / 4) + border,
- widget->u.text.text,
- widget->u.text.len,
- &font_style);
- }
-
- nsfb_update(root->u.root.fb, &bbox);
-
- return 0;
-}
-
-static void
-fb_text_input_remove_caret_cb(fbtk_widget_t *widget)
-{
- int c_x, c_y, c_h;
-
- if (fbtk_get_caret(widget, &c_x, &c_y, &c_h)) {
- fbtk_request_redraw(widget);
- }
-}
-
-/** Routine called when text events occour in writeable widget.
- *
- * @param widget The widget reciving input events.
- * @param cbi The callback parameters.
- * @return The callback result.
- */
-static int
-text_input(fbtk_widget_t *widget, fbtk_callback_info *cbi)
-{
- int value;
- static fbtk_modifier_type modifier = FBTK_MOD_CLEAR;
- char *temp;
- plot_font_style_t font_style;
- int fh;
- int border;
- bool caret_moved = false;
-
- fb_text_font_style(widget, &fh, &border, &font_style);
-
- if (cbi->event == NULL) {
- /* gain focus */
- if (widget->u.text.text == NULL)
- widget->u.text.text = calloc(1,1);
-
- return 0;
- }
-
- value = cbi->event->value.keycode;
-
- if (cbi->event->type != NSFB_EVENT_KEY_DOWN) {
- switch (value) {
- case NSFB_KEY_RSHIFT:
- modifier &= ~FBTK_MOD_RSHIFT;
- break;
-
- case NSFB_KEY_LSHIFT:
- modifier &= ~FBTK_MOD_LSHIFT;
- break;
-
- case NSFB_KEY_RCTRL:
- modifier &= ~FBTK_MOD_RCTRL;
- break;
-
- case NSFB_KEY_LCTRL:
- modifier &= ~FBTK_MOD_LCTRL;
- break;
-
- default:
- break;
- }
- return 0;
- }
-
- switch (value) {
- case NSFB_KEY_BACKSPACE:
- if (widget->u.text.idx <= 0)
- break;
- memmove(widget->u.text.text + widget->u.text.idx - 1,
- widget->u.text.text + widget->u.text.idx,
- widget->u.text.len - widget->u.text.idx);
- widget->u.text.idx--;
- widget->u.text.len--;
- widget->u.text.text[widget->u.text.len] = 0;
-
- fb_font_width(&font_style, widget->u.text.text,
- widget->u.text.len, &widget->u.text.width);
-
- caret_moved = true;
- break;
-
- case NSFB_KEY_RETURN:
- widget->u.text.enter(widget->u.text.pw, widget->u.text.text);
- break;
-
- case NSFB_KEY_RIGHT:
- if (widget->u.text.idx < widget->u.text.len) {
- if (modifier == FBTK_MOD_CLEAR)
- widget->u.text.idx++;
- else
- widget->u.text.idx = widget->u.text.len;
-
- caret_moved = true;
- }
- break;
-
- case NSFB_KEY_LEFT:
- if (widget->u.text.idx > 0) {
- if (modifier == FBTK_MOD_CLEAR)
- widget->u.text.idx--;
- else
- widget->u.text.idx = 0;
-
- caret_moved = true;
- }
- break;
-
- case NSFB_KEY_PAGEUP:
- case NSFB_KEY_PAGEDOWN:
- case NSFB_KEY_UP:
- case NSFB_KEY_DOWN:
- /* Not handling any of these correctly yet, but avoid putting
- * charcters in the text widget when they're pressed. */
- break;
-
- case NSFB_KEY_RSHIFT:
- modifier |= FBTK_MOD_RSHIFT;
- break;
-
- case NSFB_KEY_LSHIFT:
- modifier |= FBTK_MOD_LSHIFT;
- break;
-
- case NSFB_KEY_RCTRL:
- modifier |= FBTK_MOD_RCTRL;
- break;
-
- case NSFB_KEY_LCTRL:
- modifier |= FBTK_MOD_LCTRL;
- break;
-
- default:
- if (modifier & FBTK_MOD_LCTRL || modifier & FBTK_MOD_RCTRL) {
- /* CTRL pressed, don't enter any text */
- if (value == NSFB_KEY_u) {
- /* CTRL+U: clear writable */
- widget->u.text.idx = 0;
- widget->u.text.len = 0;
- widget->u.text.text[widget->u.text.len] = '\0';
- widget->u.text.width = 0;
- caret_moved = true;
- }
- break;
- }
-
- /* allow for new character and null */
- temp = realloc(widget->u.text.text, widget->u.text.len + 2);
- if (temp == NULL) {
- break;
- }
-
- widget->u.text.text = temp;
- memmove(widget->u.text.text + widget->u.text.idx + 1,
- widget->u.text.text + widget->u.text.idx,
- widget->u.text.len - widget->u.text.idx);
- widget->u.text.text[widget->u.text.idx] =
- fbtk_keycode_to_ucs4(value, modifier);
- widget->u.text.idx++;
- widget->u.text.len++;
- widget->u.text.text[widget->u.text.len] = '\0';
-
- fb_font_width(&font_style, widget->u.text.text,
- widget->u.text.len, &widget->u.text.width);
- caret_moved = true;
- break;
- }
-
- if (caret_moved) {
- fb_font_width(&font_style, widget->u.text.text,
- widget->u.text.idx, &widget->u.text.idx_offset);
- fbtk_set_caret(widget, true,
- widget->u.text.idx_offset + border,
- border,
- widget->height - border - border,
- fb_text_input_remove_caret_cb);
- }
-
- fbtk_request_redraw(widget);
-
- return 0;
-}
-
-/** Routine called when click events occour in writeable widget.
- *
- * @param widget The widget reciving click events.
- * @param cbi The callback parameters.
- * @return The callback result.
- */
-static int
-text_input_click(fbtk_widget_t *widget, fbtk_callback_info *cbi)
-{
- plot_font_style_t font_style;
- int fh;
- int border;
- size_t idx;
-
- fb_text_font_style(widget, &fh, &border, &font_style);
-
- widget->u.text.idx = widget->u.text.len;
-
- fb_font_position(&font_style, widget->u.text.text,
- widget->u.text.len, cbi->x - border,
- &idx,
- &widget->u.text.idx_offset);
- widget->u.text.idx = idx;
- fbtk_set_caret(widget, true,
- widget->u.text.idx_offset + border,
- border,
- widget->height - border - border,
- fb_text_input_remove_caret_cb);
-
- fbtk_request_redraw(widget);
-
- return 0;
-}
-
-/** Routine called when "stripped of focus" event occours for writeable widget.
- *
- * @param widget The widget reciving "stripped of focus" event.
- * @param cbi The callback parameters.
- * @return The callback result.
- */
-static int
-text_input_strip_focus(fbtk_widget_t *widget, fbtk_callback_info *cbi)
-{
- fbtk_set_caret(widget, false, 0, 0, 0, NULL);
-
- return 0;
-}
-
-/* exported function documented in fbtk.h */
-void
-fbtk_writable_text(fbtk_widget_t *widget, fbtk_enter_t enter, void *pw)
-{
- widget->u.text.enter = enter;
- widget->u.text.pw = pw;
-
- fbtk_set_handler(widget, FBTK_CBT_INPUT, text_input, widget);
-}
-
-/* exported function documented in fbtk.h */
-void
-fbtk_set_text(fbtk_widget_t *widget, const char *text)
-{
- plot_font_style_t font_style;
- int c_x, c_y, c_h;
- int fh;
- int border;
-
- if ((widget == NULL) || (widget->type != FB_WIDGET_TYPE_TEXT))
- return;
- if (widget->u.text.text != NULL) {
- if (strcmp(widget->u.text.text, text) == 0)
- return; /* text is being set to the same thing */
- free(widget->u.text.text);
- }
- widget->u.text.text = strdup(text);
- widget->u.text.len = strlen(text);
- widget->u.text.idx = widget->u.text.len;
-
-
- fb_text_font_style(widget, &fh, &border, &font_style);
- fb_font_width(&font_style, widget->u.text.text,
- widget->u.text.len, &widget->u.text.width);
- fb_font_width(&font_style, widget->u.text.text,
- widget->u.text.idx, &widget->u.text.idx_offset);
-
- if (fbtk_get_caret(widget, &c_x, &c_y, &c_h)) {
- /* Widget has caret; move it to end of new string */
- fbtk_set_caret(widget, true,
- widget->u.text.idx_offset + border,
- border,
- widget->height - border - border,
- fb_text_input_remove_caret_cb);
- }
-
- fbtk_request_redraw(widget);
-}
-
-/* exported function documented in fbtk.h */
-fbtk_widget_t *
-fbtk_create_text(fbtk_widget_t *parent,
- int x,
- int y,
- int width,
- int height,
- colour bg,
- colour fg,
- bool outline)
-{
- fbtk_widget_t *neww;
-
- neww = fbtk_widget_new(parent, FB_WIDGET_TYPE_TEXT, x, y, width, height);
- neww->fg = fg;
- neww->bg = bg;
- neww->mapped = true;
- neww->u.text.outline = outline;
-
- fbtk_set_handler(neww, FBTK_CBT_REDRAW, fb_redraw_text, NULL);
- fbtk_set_handler(neww, FBTK_CBT_DESTROY, fb_destroy_text, NULL);
-
- return neww;
-}
-
-/* exported function documented in fbtk.h */
-fbtk_widget_t *
-fbtk_create_writable_text(fbtk_widget_t *parent,
- int x,
- int y,
- int width,
- int height,
- colour bg,
- colour fg,
- bool outline,
- fbtk_enter_t enter,
- void *pw)
-{
- fbtk_widget_t *neww;
-
- neww = fbtk_widget_new(parent, FB_WIDGET_TYPE_TEXT, x, y, width, height);
- neww->fg = fg;
- neww->bg = bg;
- neww->mapped = true;
-
- neww->u.text.outline = outline;
- neww->u.text.enter = enter;
- neww->u.text.pw = pw;
-
- fbtk_set_handler(neww, FBTK_CBT_REDRAW, fb_redraw_text, NULL);
- fbtk_set_handler(neww, FBTK_CBT_DESTROY, fb_destroy_text, NULL);
- fbtk_set_handler(neww, FBTK_CBT_CLICK, text_input_click, pw);
- fbtk_set_handler(neww, FBTK_CBT_STRIP_FOCUS, text_input_strip_focus, NULL);
- fbtk_set_handler(neww, FBTK_CBT_INPUT, text_input, neww);
-
- return neww;
-}
-
-/* exported function documented in fbtk.h */
-fbtk_widget_t *
-fbtk_create_text_button(fbtk_widget_t *parent,
- int x,
- int y,
- int width,
- int height,
- colour bg,
- colour fg,
- fbtk_callback click,
- void *pw)
-{
- fbtk_widget_t *neww;
-
- neww = fbtk_widget_new(parent, FB_WIDGET_TYPE_TEXT, x, y, width, height);
- neww->fg = fg;
- neww->bg = bg;
- neww->mapped = true;
-
- neww->u.text.outline = true;
-
- fbtk_set_handler(neww, FBTK_CBT_REDRAW, fb_redraw_text_button, NULL);
- fbtk_set_handler(neww, FBTK_CBT_DESTROY, fb_destroy_text, NULL);
- fbtk_set_handler(neww, FBTK_CBT_CLICK, click, pw);
- fbtk_set_handler(neww, FBTK_CBT_POINTERENTER, fbtk_set_ptr, &hand_image);
-
- return neww;
-}
-
-/*
- * Local Variables:
- * c-basic-offset:8
- * End:
- */