win32 plotter implementation. More...

#include "utils/config.h"
#include <sys/types.h>
#include <stdint.h>
#include <string.h>
#include <limits.h>
#include <math.h>
#include <windows.h>
#include "utils/log.h"
#include "utils/utf8.h"
#include "netsurf/mouse.h"
#include "netsurf/window.h"
#include "netsurf/plotters.h"
#include "windows/bitmap.h"
#include "windows/font.h"
#include "windows/gui.h"
#include "windows/plot.h"

Include dependency graph for plot.c:

Functions
static nserror	plot_block (COLORREF col, int x, int y, int width, int height)
	bitmap helper to plot a solid block of colour More...

static nserror	plot_alpha_bitmap (HDC hdc, struct bitmap *bitmap, int x, int y, int width, int height)
	plot an alpha blended bitmap More...

static nserror	plot_bitmap (struct bitmap *bitmap, int x, int y, int width, int height)
	Internal bitmap plotting. More...

static nserror	clip (const struct redraw_context ctx, const struct rect clip)
	Sets a clip rectangle for subsequent plot operations. More...

static nserror	arc (const struct redraw_context ctx, const plot_style_t style, int x, int y, int radius, int angle1, int angle2)
	Plots an arc. More...

static nserror	disc (const struct redraw_context ctx, const plot_style_t style, int x, int y, int radius)
	Plots a circle. More...

static nserror	line (const struct redraw_context ctx, const plot_style_t style, const struct rect *line)
	Plots a line. More...

static nserror	rectangle (const struct redraw_context ctx, const plot_style_t style, const struct rect *rect)
	Plots a rectangle. More...

static nserror	polygon (const struct redraw_context ctx, const plot_style_t style, const int *p, unsigned int n)
	Plot a polygon. More...

static nserror	path (const struct redraw_context ctx, const plot_style_t pstyle, const float *p, unsigned int n, const float transform[6])
	Plots a path. More...

static nserror	bitmap (const struct redraw_context ctx, struct bitmap bitmap, int x, int y, int width, int height, colour bg, bitmap_flags_t flags)
	Plot a bitmap. More...

static nserror	text (const struct redraw_context ctx, const struct plot_font_style fstyle, int x, int y, const char *text, size_t length)
	Text plotting. More...

Variables
HDC	plot_hdc

static RECT	plot_clip
	currently set clipping rectangle More...

const struct plotter_table	win_plotters
	win32 API plot operation table More...

Detailed Description

win32 plotter implementation.

Definition in file plot.c.

Function Documentation

◆ arc()

static nserror arc	(	const struct redraw_context *	ctx,
		const plot_style_t *	style,
		int	x,
		int	y,
		int	radius,
		int	angle1,
		int	angle2
	)

static

Plots an arc.

plot an arc segment around (x,y), anticlockwise from angle1 to angle2. Angles are measured anticlockwise from horizontal, in degrees.

Parameters

ctx	The current redraw context.
style	Style controlling the arc plot.
x	The x coordinate of the arc.
y	The y coordinate of the arc.
radius	The radius of the arc.
angle1	The start angle of the arc.
angle2	The finish angle of the arc.

Returns: NSERROR_OK on success else error code.

Definition at line 387 of file plot.c.

References M_PI, NSERROR_INVALID, NSERROR_OK, NSLOG, plot_clip, plot_hdc, and plot_style_s::stroke_colour.

◆ bitmap()

static nserror bitmap	(	const struct redraw_context *	ctx,
		struct bitmap *	bitmap,
		int	x,
		int	y,
		int	width,
		int	height,
		colour	bg,
		bitmap_flags_t	flags
	)

static

Plot a bitmap.

Tiled plot of a bitmap image. (x,y) gives the top left coordinate of an explicitly placed tile. From this tile the image can repeat in all four directions – up, down, left and right – to the extents given by the current clip rectangle.

The bitmap_flags say whether to tile in the x and y directions. If not tiling in x or y directions, the single image is plotted. The width and height give the dimensions the image is to be scaled to.

Parameters

ctx	The current redraw context.
bitmap	The bitmap to plot
x	The x coordinate to plot the bitmap
y	The y coordiante to plot the bitmap
width	The width of area to plot the bitmap into
height	The height of area to plot the bitmap into
bg	the background colour to alpha blend into
flags	the flags controlling the type of plot operation

Returns: NSERROR_OK on success else error code.

TODO: Currently using top left pixel. Maybe centre pixel or average value would be better.

Definition at line 857 of file plot.c.

References BITMAPF_REPEAT_X, BITMAPF_REPEAT_Y, bitmap::height, height, NSERROR_OK, NSLOG, bitmap::opaque, bitmap::pixdata, plot_bitmap(), plot_block(), plot_clip, bitmap::width, and width.

Referenced by amiga_bitmap_create(), amiga_bitmap_destroy(), amiga_bitmap_get_buffer(), amiga_bitmap_get_opaque(), amiga_bitmap_get_rowstride(), amiga_bitmap_modified(), amiga_bitmap_set_opaque(), amiga_icon_from_bitmap(), atari_bitmap_buffer_size(), atari_bitmap_create_ex(), atari_bitmap_destroy(), atari_bitmap_get_height(), atari_bitmap_get_opaque(), atari_bitmap_get_rowstride(), atari_bitmap_get_width(), bitmap_destroy(), bitmap_get_buffer(), bitmap_get_height(), bitmap_get_opaque(), bitmap_get_rowstride(), bitmap_get_width(), bitmap_modified(), bitmap_set_opaque(), browser_window_history_get_thumbnail(), content__get_bitmap(), framebuffer_bitmap_get_opaque(), gif_content_is_opaque(), gif_get_bitmap(), gif_redraw(), image_cache_add(), jpeg_cache_convert(), jpegxl_cache_convert(), knockout_plot_bitmap(), make_toolbar_item_websearch(), plot_bitmap(), png_cache_convert(), riscos_bitmap_create(), ro_gui_save_create_thumbnail(), ro_gui_window_iconise(), rsvg_cache_convert(), NSResizeKnob::SetBitmap(), NSThrobber::SetBitmap(), webp_cache_convert(), win32_bitmap_create(), and win32_bitmap_destroy().

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◆ clip()

static nserror clip	(	const struct redraw_context *	ctx,
		const struct rect *	clip
	)

static

Sets a clip rectangle for subsequent plot operations.

Parameters

ctx	The current redraw context.
clip	The rectangle to limit all subsequent plot operations within.

Returns: NSERROR_OK on success else error code.

Definition at line 357 of file plot.c.

References clip(), NSERROR_OK, NSLOG, and plot_clip.

Referenced by ablend_pixel(), about_userdraw(), ami_clip(), ami_do_redraw_tiled(), atari_cookie_manager_draw(), atari_global_history_draw(), atari_hotlist_draw(), atari_treeview_redraw(), bitmap_convert_tc(), browser_window_place_caret(), browser_window_redraw(), clip(), content_redraw(), content_scaled_redraw(), cookie_manager_redraw(), fb_cw_draw_event(), fb_redraw(), fbtk_clip_rect(), form_clip_inside_select_menu(), form_redraw_select_menu(), framebuffer_plot_clip(), gif_redraw(), global_history_redraw(), gui_get_clipboard(), gui_set_clipboard(), gui_window_place_caret(), hotlist_redraw(), html_redraw(), html_redraw_background(), html_redraw_border_plot(), html_redraw_borders(), html_redraw_box(), html_redraw_box_children(), html_redraw_inline_background(), html_redraw_inline_borders(), html_redraw_text_box(), html_set_focus(), image_bitmap_plot(), image_cache_redraw(), knockout_plot_clip(), local_history_redraw(), monkey_plot_clip(), monkey_window_handle_redraw(), nsbeos_plot_clip(), nsbeos_window_expose_event(), nsgtk_cw_draw_event(), nsgtk_plot_clip(), nsgtk_print_plot_clip(), nsgtk_window_draw_event(), nsico_redraw(), nsw32_corewindow_paint(), nsws_drawable_paint(), on_aes_event(), on_redraw(), on_redraw_event(), page_info_redraw(), plot_bitmap(), plot_blit_bitmap(), plot_clip(), plot_clipped_rectangle(), plot_get_clip_grect(), plot_init(), print_declare_fonts(), print_document(), print_draw_next_page(), redraw_entry(), ro_gui_progress_bar_redraw_window(), ro_gui_url_bar_redraw(), ro_gui_window__redraw_rect(), ro_plot_clip(), scrollbar_redraw(), svg_redraw(), text_draw(), text_redraw(), textarea_redraw(), textplain_redraw(), toolbar_key_input(), toolbar_redraw(), toolbar_redraw_cb(), treeview_redraw(), window_redraw_content(), and window_redraw_favicon().

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◆ disc()

static nserror disc	(	const struct redraw_context *	ctx,
		const plot_style_t *	style,
		int	x,
		int	y,
		int	radius
	)

static

Plots a circle.

Plot a circle centered on (x,y), which is optionally filled.

Parameters

ctx	The current redraw context.
style	Style controlling the circle plot.
x	x coordinate of circle centre.
y	y coordinate of circle centre.
radius	circle radius.

Returns: NSERROR_OK on success else error code.

Definition at line 500 of file plot.c.

References plot_style_s::fill_colour, plot_style_s::fill_type, NSERROR_INVALID, NSERROR_OK, NSLOG, plot_clip, plot_hdc, PLOT_OP_TYPE_NONE, and plot_style_s::stroke_colour.

◆ line()

static nserror line	(	const struct redraw_context *	ctx,
		const plot_style_t *	style,
		const struct rect *	line
	)

static

Plots a line.

plot a line from (x0,y0) to (x1,y1). Coordinates are at centre of line width/thickness.

Parameters

ctx	The current redraw context.
style	Style controlling the line plot.
line	A rectangle defining the line to be drawn

Returns: NSERROR_OK on success else error code.

Definition at line 579 of file plot.c.

References line(), NSERROR_INVALID, NSERROR_OK, NSLOG, plot_clip, plot_hdc, PLOT_OP_TYPE_DASH, PLOT_OP_TYPE_DOT, plot_style_fixed_to_int, plot_style_s::stroke_colour, plot_style_s::stroke_type, and plot_style_s::stroke_width.

Referenced by __assert2(), ami_line(), ami_memory_slab_stats_cb(), duk__emit_op_only(), duk__error_getter_helper(), duk_err_create_and_throw(), duk_error_raw(), fb_redraw(), fb_redraw_text(), fb_redraw_text_button(), framebuffer_plot_line(), get_key_value(), gtk_fetch_filetype_init(), gtk_print_font_paint(), knockout_plot_line(), layout_flex__build_line(), layout_flex__collect_items_into_lines(), layout_flex__distribute_free_main(), layout_flex__get_min_max_violations(), layout_flex__item_freeze(), layout_flex__place_line_items_cross(), layout_flex__place_line_items_main(), layout_flex__place_lines(), layout_flex__remaining_free_main(), layout_flex__resolve_line(), line(), llcache_process_metadata(), monkey_fetch_filetype_init(), monkey_plot_line(), nsbeos_plot_line(), nsfont_paint(), nsfont_split(), nsgtk_plot_line(), nsgtk_print_plot_line(), optionline(), plot_line(), ro_gui_ieurl_file_parse(), ro_gui_uri_file_parse(), ro_gui_url_complete_redraw(), ro_gui_url_file_parse(), ro_plot_line(), ro_textarea_redraw_internal(), ro_textarea_set_caret_xy(), scrollbar_rectangle(), textarea_get_b_off_xy(), textarea_keypress(), textarea_redraw(), textarea_reflow_multiline(), textplain_coords_from_range(), textplain_find_line(), textplain_get_line(), textplain_offset_from_coords(), textplain_redraw(), textplain_reformat(), textplain_textsearch_find(), xdg_get_default_app(), and xdg_get_exec_cmd().

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◆ path()

static nserror path	(	const struct redraw_context *	ctx,
		const plot_style_t *	pstyle,
		const float *	p,
		unsigned int	n,
		const float	transform[6]
	)

static

Plots a path.

Path plot consisting of cubic Bezier curves. Line and fill colour is controlled by the plot style.

Parameters

ctx	The current redraw context.
pstyle	Style controlling the path plot.
p	elements of path
n	nunber of elements on path
transform	A transform to apply to the path.

Returns: NSERROR_OK on success else error code.

Definition at line 821 of file plot.c.

References NSERROR_OK, and NSLOG.

Referenced by ami_file_set_type(), ami_gui_map_filename(), amiga_basename(), amiga_bitmap_save(), amiga_icon_superimpose_favicon(), amiga_nsurl_to_path(), amiga_path_to_nsurl(), atari_basename(), atari_nsurl_to_path(), atari_path_to_nsurl(), browser_window__navigate_internal(), check_dirname(), check_homedir(), cookie_manager_delete_entry(), download_ro_filetype(), expand_path(), fetch_filetype(), fetch_resource_finalise(), fetch_resource_initialise(), fetch_resource_setup(), file_select(), filepath_path_to_strvec(), filesize(), find_app_resources(), find_resource(), gemdos_realpath(), gen_nice_title(), get_resource_url(), global_history_export(), gui_default_mimetype(), gui_default_pdf_password(), gui_get_resource_url(), gui_init(), handle_filesystem_select_button(), hash_add_file(), hotlist_export(), hotlist_get_temp_path(), hotlist_load(), hotlist_populate(), hotlist_save(), html_css_fetcher_setup(), is_dir(), is_internal_navigate_url(), main(), menu_save_page(), messages_add_from_file(), messages_load_ctx(), mouse_action_drag_none(), netsurf_path_to_nsurl(), netsurf_recursive_rm(), nsbeos_find_app_path(), nsbeos_gui_view_source(), nsbeos_scaffolding_dispatch_event(), nsgtk_download_tree_view_row_activated(), nsgtk_get_resource_url(), nsgtk_PDF_no_pass(), nsgtk_pdf_password(), nsgtk_PDF_set_pass(), nsgtk_saveas_dialog(), nsoption_read(), nsoption_write(), nsw32_get_resource_data(), nsw32_get_resource_url(), posix_basename(), posix_nsurl_to_path(), posix_path_to_nsurl(), realpath(), riscos_basename(), riscos_bitmap_save(), ro_filetype_from_unix_path(), ro_gui_choose_language(), ro_gui_create_dirs(), ro_gui_default_language(), ro_gui_download_canonicalise(), ro_gui_download_remember_dir(), ro_gui_save_clipboard(), ro_gui_save_complete(), ro_gui_save_content(), ro_gui_save_datasave_ack(), ro_gui_save_link(), ro_gui_save_object_native(), ro_gui_save_ok(), ro_gui_save_set_file_type(), ro_nsurl_to_path(), ro_path_to_nsurl(), ro_plot_draw_path(), ro_plot_line(), ro_plot_path(), ro_plot_polygon(), ro_plot_rectangle(), save_as_text(), save_complete(), save_complete_ctx_initialise(), savepage_button_clicked_cb(), scrap_txt_read(), select_filepath(), url_to_path(), urldb_delete_cookie(), urldb_delete_cookie_hosts(), urldb_delete_cookie_paths(), urldb_get_cookie(), urldb_load_cookies(), urldb_match_path(), urldb_parse_cookie(), urldb_save_search_tree(), urldb_set_cookie(), urldb_write_paths(), utf8_save_text(), windows_basename(), windows_nsurl_to_path(), windows_path_to_nsurl(), xdg_get_default_app(), and xdg_get_exec_cmd().

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◆ plot_alpha_bitmap()

static nserror plot_alpha_bitmap	(	HDC	hdc,
		struct bitmap *	bitmap,
		int	x,
		int	y,
		int	width,
		int	height
	)

static

plot an alpha blended bitmap

blunt force truma way of achiving alpha blended plotting

Parameters

hdc	drawing cotext
bitmap	bitmap to render
x	x coordinate to plot at
y	y coordinate to plot at
width	The width to plot the bitmap into
height	The height to plot the bitmap into

Returns: NSERROR_OK on success else appropriate error code.

Definition at line 120 of file plot.c.

References bitmap_scale(), bitmap::height, height, NSERROR_INVALID, NSERROR_OK, NSLOG, bitmap::pixdata, plot_clip, bitmap::width, width, and bitmap::windib.

Referenced by plot_bitmap().

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◆ plot_bitmap()

static nserror plot_bitmap	(	struct bitmap *	bitmap,
		int	x,
		int	y,
		int	width,
		int	height
	)

static

Internal bitmap plotting.

Parameters

bitmap	The bitmap to plot
x	x coordinate to plot at
y	y coordinate to plot at
width	The width to plot the bitmap into
height	The height to plot the bitmap into

Returns: NSERROR_OK on success else appropriate error code.

Definition at line 276 of file plot.c.

References bitmap::height, height, NSERROR_INVALID, NSERROR_OK, NSLOG, bitmap::opaque, bitmap::pbmi, bitmap::pixdata, plot_alpha_bitmap(), plot_clip, plot_hdc, bitmap::width, and width.

Referenced by bitmap().

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◆ plot_block()

static nserror plot_block	(	COLORREF	col,
		int	x,
		int	y,
		int	width,
		int	height
	)

static

bitmap helper to plot a solid block of colour

Parameters

col	colour to plot with
x	the x coordinate to plot at
y	the y coordinate to plot at
width	the width of block to plot
height	the height to plot

Returns: NSERROR_OK on sucess else error code.

Definition at line 61 of file plot.c.

References height, NSERROR_INVALID, NSERROR_OK, NSLOG, plot_clip, plot_hdc, and width.

Referenced by bitmap().

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◆ polygon()

static nserror polygon	(	const struct redraw_context *	ctx,
		const plot_style_t *	style,
		const int *	p,
		unsigned int	n
	)

static

Plot a polygon.

Plots a filled polygon with straight lines between points. The lines around the edge of the ploygon are not plotted. The polygon is filled with the non-zero winding rule.

Parameters

ctx	The current redraw context.
style	Style controlling the polygon plot.
p	verticies of polygon
n	number of verticies.

Returns: NSERROR_OK on success else error code.

Definition at line 733 of file plot.c.

References plot_style_s::fill_colour, NSERROR_INVALID, NSERROR_OK, NSLOG, plot_clip, plot_hdc, point_s::x, and point_s::y.

◆ rectangle()

static nserror rectangle	(	const struct redraw_context *	ctx,
		const plot_style_t *	style,
		const struct rect *	rect
	)

static

Plots a rectangle.

The rectangle can be filled an outline or both controlled by the plot style The line can be solid, dotted or dashed. Top left corner at (x0,y0) and rectangle has given width and height.

Parameters

ctx	The current redraw context.
style	Style controlling the rectangle plot.
rect	A rectangle defining the line to be drawn

Returns: NSERROR_OK on success else error code.

Definition at line 648 of file plot.c.

References plot_style_s::fill_colour, plot_style_s::fill_type, NSERROR_INVALID, NSERROR_OK, NSLOG, plot_clip, plot_hdc, PLOT_OP_TYPE_DASH, PLOT_OP_TYPE_DOT, PLOT_OP_TYPE_NONE, plot_style_fixed_to_int, plot_style_s::stroke_colour, plot_style_s::stroke_type, plot_style_s::stroke_width, rect::x0, rect::x1, rect::y0, and rect::y1.

◆ text()

static nserror text	(	const struct redraw_context *	ctx,
		const struct plot_font_style *	fstyle,
		int	x,
		int	y,
		const char *	text,
		size_t	length
	)

static

Text plotting.

Parameters

ctx	The current redraw context.
fstyle	plot style for this text
x	x coordinate
y	y coordinate
text	UTF-8 string to plot
length	length of string, in bytes

Returns: NSERROR_OK on success else error code.

Definition at line 978 of file plot.c.

References plot_font_style::background, plot_font_style::foreground, get_font(), NSERROR_INVALID, NSERROR_OK, NSLOG, plot_clip, plot_hdc, and text().

Referenced by ami_clipboard_cat_collection(), ami_easy_clipboard(), ami_gui_opts_event(), ami_search_string(), ami_text(), atari_window_set_status(), beos_warn_user(), box_construct_text(), box_select_add_option(), box_textarea_create_textarea(), browser_window_set_status(), create_login_window(), die(), fb_url_enter(), fbtk_set_text(), find_occurrences_html_box(), form_add_option(), framebuffer_plot_text(), gui_download_window_create(), gui_get_clipboard(), gui_set_clipboard(), gui_window_set_status(), html_redraw_file(), knockout_plot_text(), monkey_plot_text(), nsbeos_about(), nsbeos_plot_text(), nsbeos_scaffolding_dispatch_event(), nsgtk_combo_box_text_append_text(), nsgtk_download_update(), nsgtk_plot_text(), nsgtk_print_plot_text(), options_general_dialog_handler(), plot_text(), print_fonts_plot_text(), riscos_window_set_status(), ro_gui_menu_define_menu_add(), ro_gui_options_connection_proxy_type(), ro_gui_options_image_read(), ro_gui_set_icon_string(), ro_gui_set_window_title(), ro_gui_status_bar_set_text(), ro_gui_wimp_event_prepare_gright_menu(), ro_plot_text(), ro_textarea_insert_text(), ro_textarea_reflow(), ro_textarea_replace_text(), ro_textarea_set_text(), save_complete_node_handler(), save_text_add_to_buffer(), sb_set_text(), selection_copy_box(), selection_string_append(), set_text(), text(), text_draw(), textarea_char_to_byte_offset(), textarea_drop_text(), textarea_get_text(), textarea_insert_text(), textarea_reflow_multiline(), textarea_set_text(), textplain_clone(), textplain_close(), textplain_convert(), textplain_coord_from_offset(), textplain_coords_from_range(), textplain_create(), textplain_destroy(), textplain_find_line(), textplain_get_line(), textplain_get_raw_data(), textplain_get_selection(), textplain_keypress(), textplain_line_count(), textplain_mouse_action(), textplain_mouse_track(), textplain_offset_from_coords(), textplain_open(), textplain_process_data(), textplain_redraw(), textplain_reformat(), textplain_textsearch_find(), textplain_textselection_copy(), textplain_textselection_get_end(), toolbar_key_input(), toolbar_set_url(), treeview__create_textarea(), treeview__search(), treeview_node_selection_walk_cb(), win32_window_set_status(), and window_set_stauts().

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Variable Documentation

◆ plot_clip

RECT plot_clip

static

currently set clipping rectangle

Definition at line 47 of file plot.c.

Referenced by arc(), bitmap(), clip(), disc(), line(), plot_alpha_bitmap(), plot_bitmap(), plot_block(), polygon(), rectangle(), and text().

◆ plot_hdc

HDC plot_hdc

Definition at line 44 of file plot.c.

Referenced by arc(), bitmap_render(), disc(), line(), nsw32_corewindow_paint(), nsws_drawable_paint(), plot_bitmap(), plot_block(), polygon(), rectangle(), and text().

◆ win_plotters

const struct plotter_table win_plotters

Initial value:

= {
        .rectangle = rectangle,
        .line = line,
        .polygon = polygon,
        .clip = clip,
        .text = text,
        .disc = disc,
        .arc = arc,
        .bitmap = bitmap,
        .path = path,
        .option_knockout = true,
}

win32 API plot operation table

Definition at line 1040 of file plot.c.

Referenced by bitmap_render(), nsw32_cookie_draw(), nsw32_global_history_draw(), nsw32_hotlist_draw(), nsw32_local_history_draw(), and nsws_drawable_paint().

Functions

Variables

Detailed Description

Function Documentation

◆ arc()

◆ bitmap()

◆ clip()

◆ disc()

◆ line()

◆ path()

◆ plot_alpha_bitmap()

◆ plot_bitmap()

◆ plot_block()

◆ polygon()

◆ rectangle()

◆ text()

Variable Documentation

◆ plot_clip

◆ plot_hdc

◆ win_plotters