diff options
Diffstat (limited to 'frontends/riscos/plotters.c')
-rw-r--r-- | frontends/riscos/plotters.c | 784 |
1 files changed, 480 insertions, 304 deletions
diff --git a/frontends/riscos/plotters.c b/frontends/riscos/plotters.c index 06e732d99..b12d6c403 100644 --- a/frontends/riscos/plotters.c +++ b/frontends/riscos/plotters.c @@ -16,8 +16,9 @@ * along with this program. If not, see <http://www.gnu.org/licenses/>. */ -/** \file - * Target independent plotting (RISC OS screen implementation). +/** + * \file + * RISC OS screen plotter implementation. */ #include <stdbool.h> @@ -35,38 +36,6 @@ #include "riscos/font.h" #include "riscos/oslib_pre7.h" -static bool ro_plot_rectangle(int x0, int y0, int x1, int y1, const plot_style_t *style); -static bool ro_plot_line(int x0, int y0, int x1, int y1, const plot_style_t *style); -static bool ro_plot_draw_path(const draw_path * const path, int width, - colour c, bool dotted, bool dashed); -static bool ro_plot_polygon(const int *p, unsigned int n, const plot_style_t *style); -static bool ro_plot_path(const float *p, unsigned int n, colour fill, float width, - colour c, const float transform[6]); -static bool ro_plot_clip(const struct rect *clip); -static bool ro_plot_text(int x, int y, const char *text, size_t length, - const plot_font_style_t *fstyle); -static bool ro_plot_disc(int x, int y, int radius, const plot_style_t *style); -static bool ro_plot_arc(int x, int y, int radius, int angle1, int angle2, - const plot_style_t *style); -static bool ro_plot_bitmap(int x, int y, int width, int height, - struct bitmap *bitmap, colour bg, - bitmap_flags_t flags); - - -struct plotter_table plot; - -const struct plotter_table ro_plotters = { - .rectangle = ro_plot_rectangle, - .line = ro_plot_line, - .polygon = ro_plot_polygon, - .clip = ro_plot_clip, - .text = ro_plot_text, - .disc = ro_plot_disc, - .arc = ro_plot_arc, - .bitmap = ro_plot_bitmap, - .path = ro_plot_path, - .option_knockout = true, -}; int ro_plot_origin_x = 0; int ro_plot_origin_y = 0; @@ -74,143 +43,387 @@ int ro_plot_origin_y = 0; /** One version of the A9home OS is incapable of drawing patterned lines */ bool ro_plot_patterned_lines = true; +/** + * plot a path on RISC OS + */ +static nserror +ro_plot_draw_path(const draw_path * const path, + int width, + colour c, + bool dotted, + bool dashed) +{ + static const draw_line_style line_style = { + draw_JOIN_MITRED, + draw_CAP_BUTT, + draw_CAP_BUTT, + 0, 0x7fffffff, + 0, 0, 0, 0 + }; + draw_dash_pattern dash = { 0, 1, { 512 } }; + const draw_dash_pattern *dash_pattern = 0; + os_error *error; + + if (width < 1) + width = 1; + + if (ro_plot_patterned_lines) { + if (dotted) { + dash.elements[0] = 512 * width; + dash_pattern = ‐ + } else if (dashed) { + dash.elements[0] = 1536 * width; + dash_pattern = ‐ + } + } + + error = xcolourtrans_set_gcol(c << 8, 0, os_ACTION_OVERWRITE, 0, 0); + if (error) { + LOG("xcolourtrans_set_gcol: 0x%x: %s", + error->errnum, error->errmess); + return NSERROR_INVALID; + } + + error = xdraw_stroke(path, 0, 0, 0, width * 2 * 256, + &line_style, dash_pattern); + if (error) { + LOG("xdraw_stroke: 0x%x: %s", error->errnum, error->errmess); + return NSERROR_INVALID; + } + + return NSERROR_OK; +} + + +/** + * \brief Sets a clip rectangle for subsequent plot operations. + * + * \param ctx The current redraw context. + * \param clip The rectangle to limit all subsequent plot + * operations within. + * \return NSERROR_OK on success else error code. + */ +static nserror +ro_plot_clip(const struct redraw_context *ctx, const struct rect *clip) +{ + os_error *error; + char buf[12]; + + int clip_x0 = ro_plot_origin_x + clip->x0 * 2; + int clip_y0 = ro_plot_origin_y - clip->y0 * 2 - 1; + int clip_x1 = ro_plot_origin_x + clip->x1 * 2 - 1; + int clip_y1 = ro_plot_origin_y - clip->y1 * 2; + + if (clip_x1 < clip_x0 || clip_y0 < clip_y1) { + LOG("bad clip rectangle %i %i %i %i", + clip_x0, clip_y0, clip_x1, clip_y1); + return NSERROR_BAD_SIZE; + } + + buf[0] = os_VDU_SET_GRAPHICS_WINDOW; + buf[1] = clip_x0; + buf[2] = clip_x0 >> 8; + buf[3] = clip_y1; + buf[4] = clip_y1 >> 8; + buf[5] = clip_x1; + buf[6] = clip_x1 >> 8; + buf[7] = clip_y0; + buf[8] = clip_y0 >> 8; + + error = xos_writen(buf, 9); + if (error) { + LOG("xos_writen: 0x%x: %s", error->errnum, error->errmess); + return NSERROR_INVALID; + } + + return NSERROR_OK; +} + + +/** + * Plots an arc + * + * plot an arc segment around (x,y), anticlockwise from angle1 + * to angle2. Angles are measured anticlockwise from + * horizontal, in degrees. + * + * \param ctx The current redraw context. + * \param pstyle Style controlling the arc plot. + * \param x The x coordinate of the arc. + * \param y The y coordinate of the arc. + * \param radius The radius of the arc. + * \param angle1 The start angle of the arc. + * \param angle2 The finish angle of the arc. + * \return NSERROR_OK on success else error code. + */ +static nserror +ro_plot_arc(const struct redraw_context *ctx, + const plot_style_t *style, + int x, int y, int radius, int angle1, int angle2) +{ + os_error *error; + int sx, sy, ex, ey; + double t; + + x = ro_plot_origin_x + x * 2; + y = ro_plot_origin_y - y * 2; + radius <<= 1; + + error = xcolourtrans_set_gcol(style->fill_colour << 8, 0, + os_ACTION_OVERWRITE, 0, 0); + + if (error) { + LOG("xcolourtrans_set_gcol: 0x%x: %s", + error->errnum, error->errmess); + return NSERROR_INVALID; + } + + t = ((double)angle1 * M_PI) / 180.0; + sx = (x + (int)(radius * cos(t))); + sy = (y + (int)(radius * sin(t))); + t = ((double)angle2 * M_PI) / 180.0; + ex = (x + (int)(radius * cos(t))); + ey = (y + (int)(radius * sin(t))); -bool ro_plot_rectangle(int x0, int y0, int x1, int y1, const plot_style_t *style) + error = xos_plot(os_MOVE_TO, x, y); /* move to centre */ + if (error) { + LOG("xos_plot: 0x%x: %s", error->errnum, error->errmess); + return NSERROR_INVALID; + } + + error = xos_plot(os_MOVE_TO, sx, sy); /* move to start */ + if (error) { + LOG("xos_plot: 0x%x: %s", error->errnum, error->errmess); + return NSERROR_INVALID; + } + + error = xos_plot(os_PLOT_ARC | os_PLOT_TO, ex, ey); /* arc to end */ + if (error) { + LOG("xos_plot: 0x%x: %s", error->errnum, error->errmess); + return NSERROR_INVALID; + } + + return NSERROR_OK; +} + + +/** + * Plots a circle + * + * Plot a circle centered on (x,y), which is optionally filled. + * + * \param ctx The current redraw context. + * \param pstyle Style controlling the circle plot. + * \param x The x coordinate of the circle. + * \param y The y coordinate of the circle. + * \param radius The radius of the circle. + * \return NSERROR_OK on success else error code. + */ +static nserror +ro_plot_disc(const struct redraw_context *ctx, + const plot_style_t *style, + int x, int y, int radius) { + os_error *error; if (style->fill_type != PLOT_OP_TYPE_NONE) { - os_error *error; - error = xcolourtrans_set_gcol(style->fill_colour << 8, - colourtrans_USE_ECFS_GCOL, - os_ACTION_OVERWRITE, 0, 0); + error = xcolourtrans_set_gcol(style->fill_colour << 8, 0, + os_ACTION_OVERWRITE, 0, 0); if (error) { - LOG("xcolourtrans_set_gcol: 0x%x: %s", error->errnum, error->errmess); - return false; + LOG("xcolourtrans_set_gcol: 0x%x: %s", + error->errnum, error->errmess); + return NSERROR_INVALID; } - error = xos_plot(os_MOVE_TO, - ro_plot_origin_x + x0 * 2, - ro_plot_origin_y - y0 * 2 - 1); + ro_plot_origin_x + x * 2, + ro_plot_origin_y - y * 2); if (error) { LOG("xos_plot: 0x%x: %s", error->errnum, error->errmess); - return false; + return NSERROR_INVALID; } - - error = xos_plot(os_PLOT_RECTANGLE | os_PLOT_TO, - ro_plot_origin_x + x1 * 2 - 1, - ro_plot_origin_y - y1 * 2); + error = xos_plot(os_PLOT_CIRCLE | os_PLOT_BY, radius * 2, 0); if (error) { LOG("xos_plot: 0x%x: %s", error->errnum, error->errmess); - return false; + return NSERROR_INVALID; } } if (style->stroke_type != PLOT_OP_TYPE_NONE) { - bool dotted = false; - bool dashed = false; - - const int path[] = { draw_MOVE_TO, - (ro_plot_origin_x + x0 * 2) * 256, - (ro_plot_origin_y - y0 * 2 - 1) * 256, - draw_LINE_TO, - (ro_plot_origin_x + (x1) * 2) * 256, - (ro_plot_origin_y - y0 * 2 - 1) * 256, - draw_LINE_TO, - (ro_plot_origin_x + (x1) * 2) * 256, - (ro_plot_origin_y - (y1) * 2 - 1) * 256, - draw_LINE_TO, - (ro_plot_origin_x + x0 * 2) * 256, - (ro_plot_origin_y - (y1) * 2 - 1) * 256, - draw_CLOSE_LINE, - (ro_plot_origin_x + x0 * 2) * 256, - (ro_plot_origin_y - y0 * 2 - 1) * 256, - draw_END_PATH }; - - if (style->stroke_type == PLOT_OP_TYPE_DOT) - dotted = true; - if (style->stroke_type == PLOT_OP_TYPE_DASH) - dashed = true; + error = xcolourtrans_set_gcol(style->stroke_colour << 8, 0, + os_ACTION_OVERWRITE, 0, 0); + if (error) { + LOG("xcolourtrans_set_gcol: 0x%x: %s", + error->errnum, error->errmess); + return NSERROR_INVALID; + } + error = xos_plot(os_MOVE_TO, + ro_plot_origin_x + x * 2, + ro_plot_origin_y - y * 2); + if (error) { + LOG("xos_plot: 0x%x: %s", error->errnum, error->errmess); + return NSERROR_INVALID; + } + error = xos_plot(os_PLOT_CIRCLE_OUTLINE | os_PLOT_BY, + radius * 2, 0); - ro_plot_draw_path((const draw_path *)path, - style->stroke_width, - style->stroke_colour, - dotted, dashed); + if (error) { + LOG("xos_plot: 0x%x: %s", error->errnum, error->errmess); + return NSERROR_INVALID; + } } - - return true; + return NSERROR_OK; } -bool ro_plot_line(int x0, int y0, int x1, int y1, const plot_style_t *style) +/** + * Plots a line + * + * plot a line from (x0,y0) to (x1,y1). Coordinates are at + * centre of line width/thickness. + * + * \param ctx The current redraw context. + * \param pstyle Style controlling the line plot. + * \param line A rectangle defining the line to be drawn + * \return NSERROR_OK on success else error code. + */ +static nserror +ro_plot_line(const struct redraw_context *ctx, + const plot_style_t *style, + const struct rect *line) { if (style->stroke_type != PLOT_OP_TYPE_NONE) { - const int path[] = { draw_MOVE_TO, - (ro_plot_origin_x + x0 * 2) * 256, - (ro_plot_origin_y - y0 * 2 - 1) * 256, - draw_LINE_TO, - (ro_plot_origin_x + x1 * 2) * 256, - (ro_plot_origin_y - y1 * 2 - 1) * 256, - draw_END_PATH }; - bool dotted = false; + const int path[] = { + draw_MOVE_TO, + (ro_plot_origin_x + line->x0 * 2) * 256, + (ro_plot_origin_y - line->y0 * 2 - 1) * 256, + draw_LINE_TO, + (ro_plot_origin_x + line->x1 * 2) * 256, + (ro_plot_origin_y - line->y1 * 2 - 1) * 256, + draw_END_PATH }; + bool dotted = false; bool dashed = false; - if (style->stroke_type == PLOT_OP_TYPE_DOT) + if (style->stroke_type == PLOT_OP_TYPE_DOT) dotted = true; - if (style->stroke_type == PLOT_OP_TYPE_DASH) + if (style->stroke_type == PLOT_OP_TYPE_DASH) dashed = true; - return ro_plot_draw_path((const draw_path *)path, - style->stroke_width, - style->stroke_colour, + return ro_plot_draw_path((const draw_path *)path, + style->stroke_width, + style->stroke_colour, dotted, dashed); } - return true; + return NSERROR_OK; } -bool ro_plot_draw_path(const draw_path * const path, int width, - colour c, bool dotted, bool dashed) +/** + * 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. + * + * \param ctx The current redraw context. + * \param pstyle Style controlling the rectangle plot. + * \param rect A rectangle defining the line to be drawn + * \return NSERROR_OK on success else error code. + */ +static nserror +ro_plot_rectangle(const struct redraw_context *ctx, + const plot_style_t *style, + const struct rect *rect) { - static const draw_line_style line_style = { draw_JOIN_MITRED, - draw_CAP_BUTT, draw_CAP_BUTT, 0, 0x7fffffff, - 0, 0, 0, 0 }; - draw_dash_pattern dash = { 0, 1, { 512 } }; - const draw_dash_pattern *dash_pattern = 0; - os_error *error; + if (style->fill_type != PLOT_OP_TYPE_NONE) { + os_error *error; + error = xcolourtrans_set_gcol(style->fill_colour << 8, + colourtrans_USE_ECFS_GCOL, + os_ACTION_OVERWRITE, 0, 0); + if (error) { + LOG("xcolourtrans_set_gcol: 0x%x: %s", + error->errnum, error->errmess); + return NSERROR_INVALID; + } - if (width < 1) - width = 1; + error = xos_plot(os_MOVE_TO, + ro_plot_origin_x + rect->x0 * 2, + ro_plot_origin_y - rect->y0 * 2 - 1); + if (error) { + LOG("xos_plot: 0x%x: %s", error->errnum, error->errmess); + return NSERROR_INVALID; + } - if (ro_plot_patterned_lines) { - if (dotted) { - dash.elements[0] = 512 * width; - dash_pattern = ‐ - } else if (dashed) { - dash.elements[0] = 1536 * width; - dash_pattern = ‐ + error = xos_plot(os_PLOT_RECTANGLE | os_PLOT_TO, + ro_plot_origin_x + rect->x1 * 2 - 1, + ro_plot_origin_y - rect->y1 * 2); + if (error) { + LOG("xos_plot: 0x%x: %s", error->errnum, error->errmess); + return NSERROR_INVALID; } } - error = xcolourtrans_set_gcol(c << 8, 0, os_ACTION_OVERWRITE, 0, 0); - if (error) { - LOG("xcolourtrans_set_gcol: 0x%x: %s", error->errnum, error->errmess); - return false; - } + if (style->stroke_type != PLOT_OP_TYPE_NONE) { + bool dotted = false; + bool dashed = false; - error = xdraw_stroke(path, 0, 0, 0, width * 2 * 256, - &line_style, dash_pattern); - if (error) { - LOG("xdraw_stroke: 0x%x: %s", error->errnum, error->errmess); - return false; + const int path[] = { + draw_MOVE_TO, + (ro_plot_origin_x + rect->x0 * 2) * 256, + (ro_plot_origin_y - rect->y0 * 2 - 1) * 256, + draw_LINE_TO, + (ro_plot_origin_x + (rect->x1) * 2) * 256, + (ro_plot_origin_y - rect->y0 * 2 - 1) * 256, + draw_LINE_TO, + (ro_plot_origin_x + (rect->x1) * 2) * 256, + (ro_plot_origin_y - (rect->y1) * 2 - 1) * 256, + draw_LINE_TO, + (ro_plot_origin_x + rect->x0 * 2) * 256, + (ro_plot_origin_y - (rect->y1) * 2 - 1) * 256, + draw_CLOSE_LINE, + (ro_plot_origin_x + rect->x0 * 2) * 256, + (ro_plot_origin_y - rect->y0 * 2 - 1) * 256, + draw_END_PATH + }; + + if (style->stroke_type == PLOT_OP_TYPE_DOT) + dotted = true; + + if (style->stroke_type == PLOT_OP_TYPE_DASH) + dashed = true; + + ro_plot_draw_path((const draw_path *)path, + style->stroke_width, + style->stroke_colour, + dotted, + dashed); } - return true; + return NSERROR_OK; } -bool ro_plot_polygon(const int *p, unsigned int n, const plot_style_t *style) +/** + * 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. + * + * \param ctx The current redraw context. + * \param pstyle Style controlling the polygon plot. + * \param p verticies of polygon + * \param n number of verticies. + * \return NSERROR_OK on success else error code. + */ +static nserror +ro_plot_polygon(const struct redraw_context *ctx, + const plot_style_t *style, + const int *p, + unsigned int n) { int path[n * 3 + 2]; unsigned int i; @@ -225,34 +438,60 @@ bool ro_plot_polygon(const int *p, unsigned int n, const plot_style_t *style) path[n * 3] = draw_END_PATH; path[n * 3 + 1] = 0; - error = xcolourtrans_set_gcol(style->fill_colour << 8, 0, os_ACTION_OVERWRITE, 0, 0); + error = xcolourtrans_set_gcol(style->fill_colour << 8, + 0, os_ACTION_OVERWRITE, 0, 0); if (error) { - LOG("xcolourtrans_set_gcol: 0x%x: %s", error->errnum, error->errmess); - return false; + LOG("xcolourtrans_set_gcol: 0x%x: %s", + error->errnum, error->errmess); + return NSERROR_INVALID; } error = xdraw_fill((draw_path *) path, 0, 0, 0); if (error) { LOG("xdraw_fill: 0x%x: %s", error->errnum, error->errmess); - return false; + return NSERROR_INVALID; } - return true; + return NSERROR_OK; } -bool ro_plot_path(const float *p, unsigned int n, colour fill, float width, - colour c, const float transform[6]) +/** + * Plots a path. + * + * Path plot consisting of cubic Bezier curves. Line and fill colour is + * controlled by the plot style. + * + * \param ctx The current redraw context. + * \param pstyle Style controlling the path plot. + * \param p elements of path + * \param n nunber of elements on path + * \param width The width of the path + * \param transform A transform to apply to the path. + * \return NSERROR_OK on success else error code. + */ +static nserror +ro_plot_path(const struct redraw_context *ctx, + const plot_style_t *pstyle, + const float *p, + unsigned int n, + float width, + const float transform[6]) { - static const draw_line_style line_style = { draw_JOIN_MITRED, - draw_CAP_BUTT, draw_CAP_BUTT, 0, 0x7fffffff, - 0, 0, 0, 0 }; + static const draw_line_style line_style = { + draw_JOIN_MITRED, + draw_CAP_BUTT, + draw_CAP_BUTT, + 0, 0x7fffffff, + 0, 0, 0, 0 + }; int *path = 0; unsigned int i; os_trfm trfm; os_error *error; - if (n == 0) - return true; + if (n == 0) { + return NSERROR_OK; + } if (p[0] != PLOTTER_PATH_MOVE) { LOG("path doesn't start with a move"); @@ -303,222 +542,159 @@ bool ro_plot_path(const float *p, unsigned int n, colour fill, float width, trfm.entries[2][0] = (ro_plot_origin_x + transform[4] * 2) * 256; trfm.entries[2][1] = (ro_plot_origin_y - transform[5] * 2) * 256; - if (fill != NS_TRANSPARENT) { - error = xcolourtrans_set_gcol(fill << 8, 0, + if (pstyle->fill_colour != NS_TRANSPARENT) { + error = xcolourtrans_set_gcol(pstyle->fill_colour << 8, 0, os_ACTION_OVERWRITE, 0, 0); if (error) { - LOG("xcolourtrans_set_gcol: 0x%x: %s", error->errnum, error->errmess); + LOG("xcolourtrans_set_gcol: 0x%x: %s", + error->errnum, error->errmess); goto error; } error = xdraw_fill((draw_path *) path, 0, &trfm, 0); if (error) { - LOG("xdraw_stroke: 0x%x: %s", error->errnum, error->errmess); + LOG("xdraw_stroke: 0x%x: %s", + error->errnum, error->errmess); goto error; } } - if (c != NS_TRANSPARENT) { - error = xcolourtrans_set_gcol(c << 8, 0, + if (pstyle->stroke_colour != NS_TRANSPARENT) { + error = xcolourtrans_set_gcol(pstyle->stroke_colour << 8, 0, os_ACTION_OVERWRITE, 0, 0); if (error) { - LOG("xcolourtrans_set_gcol: 0x%x: %s", error->errnum, error->errmess); + LOG("xcolourtrans_set_gcol: 0x%x: %s", + error->errnum, error->errmess); goto error; } error = xdraw_stroke((draw_path *) path, 0, &trfm, 0, width * 2 * 256, &line_style, 0); if (error) { - LOG("xdraw_stroke: 0x%x: %s", error->errnum, error->errmess); + LOG("xdraw_stroke: 0x%x: %s", + error->errnum, error->errmess); goto error; } } free(path); - return true; + return NSERROR_OK; error: free(path); - return false; + return NSERROR_INVALID; } - - -bool ro_plot_clip(const struct rect *clip) +/** + * 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. + * + * \param ctx The current redraw context. + * \param bitmap The bitmap to plot + * \param x The x coordinate to plot the bitmap + * \param y The y coordiante to plot the bitmap + * \param width The width of area to plot the bitmap into + * \param height The height of area to plot the bitmap into + * \param bg the background colour to alpha blend into + * \param flags the flags controlling the type of plot operation + * \return NSERROR_OK on success else error code. + */ +static nserror +ro_plot_bitmap(const struct redraw_context *ctx, + struct bitmap *bitmap, + int x, int y, + int width, + int height, + colour bg, + bitmap_flags_t flags) { - os_error *error; - char buf[12]; - - int clip_x0 = ro_plot_origin_x + clip->x0 * 2; - int clip_y0 = ro_plot_origin_y - clip->y0 * 2 - 1; - int clip_x1 = ro_plot_origin_x + clip->x1 * 2 - 1; - int clip_y1 = ro_plot_origin_y - clip->y1 * 2; + const uint8_t *buffer; - if (clip_x1 < clip_x0 || clip_y0 < clip_y1) { - LOG("bad clip rectangle %i %i %i %i", clip_x0, clip_y0, clip_x1, clip_y1); - return false; + buffer = riscos_bitmap_get_buffer(bitmap); + if (!buffer) { + LOG("bitmap_get_buffer failed"); + return NSERROR_INVALID; } - buf[0] = os_VDU_SET_GRAPHICS_WINDOW; - buf[1] = clip_x0; - buf[2] = clip_x0 >> 8; - buf[3] = clip_y1; - buf[4] = clip_y1 >> 8; - buf[5] = clip_x1; - buf[6] = clip_x1 >> 8; - buf[7] = clip_y0; - buf[8] = clip_y0 >> 8; - - error = xos_writen(buf, 9); - if (error) { - LOG("xos_writen: 0x%x: %s", error->errnum, error->errmess); - return false; + if (!image_redraw(bitmap->sprite_area, + ro_plot_origin_x + x * 2, + ro_plot_origin_y - y * 2, + width, height, + bitmap->width, + bitmap->height, + bg, + flags & BITMAPF_REPEAT_X, flags & BITMAPF_REPEAT_Y, + flags & BITMAPF_REPEAT_X || flags & BITMAPF_REPEAT_Y, + riscos_bitmap_get_opaque(bitmap) ? IMAGE_PLOT_TINCT_OPAQUE : + IMAGE_PLOT_TINCT_ALPHA)) { + return NSERROR_INVALID; } - - return true; + return NSERROR_OK; } -bool ro_plot_text(int x, int y, const char *text, size_t length, - const plot_font_style_t *fstyle) +/** + * Text plotting. + * + * \param ctx The current redraw context. + * \param fstyle plot style for this text + * \param x x coordinate + * \param y y coordinate + * \param text UTF-8 string to plot + * \param length length of string, in bytes + * \return NSERROR_OK on success else error code. + */ +static nserror +ro_plot_text(const struct redraw_context *ctx, + const struct plot_font_style *fstyle, + int x, + int y, + const char *text, + size_t length) { os_error *error; error = xcolourtrans_set_font_colours(font_CURRENT, - fstyle->background << 8, fstyle->foreground << 8, + fstyle->background << 8, fstyle->foreground << 8, 14, 0, 0, 0); if (error) { - LOG("xcolourtrans_set_font_colours: 0x%x: %s", error->errnum, error->errmess); - return false; + LOG("xcolourtrans_set_font_colours: 0x%x: %s", + error->errnum, error->errmess); + return NSERROR_INVALID; } - return nsfont_paint(fstyle, text, length, + if (!nsfont_paint(fstyle, text, length, ro_plot_origin_x + x * 2, - ro_plot_origin_y - y * 2); -} - - -bool ro_plot_disc(int x, int y, int radius, const plot_style_t *style) -{ - os_error *error; - if (style->fill_type != PLOT_OP_TYPE_NONE) { - error = xcolourtrans_set_gcol(style->fill_colour << 8, 0, - os_ACTION_OVERWRITE, 0, 0); - if (error) { - LOG("xcolourtrans_set_gcol: 0x%x: %s", error->errnum, error->errmess); - return false; - } - error = xos_plot(os_MOVE_TO, - ro_plot_origin_x + x * 2, - ro_plot_origin_y - y * 2); - if (error) { - LOG("xos_plot: 0x%x: %s", error->errnum, error->errmess); - return false; - } - error = xos_plot(os_PLOT_CIRCLE | os_PLOT_BY, radius * 2, 0); - if (error) { - LOG("xos_plot: 0x%x: %s", error->errnum, error->errmess); - return false; - } - } - - if (style->stroke_type != PLOT_OP_TYPE_NONE) { - - error = xcolourtrans_set_gcol(style->stroke_colour << 8, 0, - os_ACTION_OVERWRITE, 0, 0); - if (error) { - LOG("xcolourtrans_set_gcol: 0x%x: %s", error->errnum, error->errmess); - return false; - } - error = xos_plot(os_MOVE_TO, - ro_plot_origin_x + x * 2, - ro_plot_origin_y - y * 2); - if (error) { - LOG("xos_plot: 0x%x: %s", error->errnum, error->errmess); - return false; - } - error = xos_plot(os_PLOT_CIRCLE_OUTLINE | os_PLOT_BY, - radius * 2, 0); - - if (error) { - LOG("xos_plot: 0x%x: %s", error->errnum, error->errmess); - return false; - } - } - return true; -} - -bool ro_plot_arc(int x, int y, int radius, int angle1, int angle2, const plot_style_t *style) -{ - os_error *error; - int sx, sy, ex, ey; - double t; - - x = ro_plot_origin_x + x * 2; - y = ro_plot_origin_y - y * 2; - radius <<= 1; - - error = xcolourtrans_set_gcol(style->fill_colour << 8, 0, - os_ACTION_OVERWRITE, 0, 0); - - if (error) { - LOG("xcolourtrans_set_gcol: 0x%x: %s", error->errnum, error->errmess); - return false; - } - - t = ((double)angle1 * M_PI) / 180.0; - sx = (x + (int)(radius * cos(t))); - sy = (y + (int)(radius * sin(t))); - - t = ((double)angle2 * M_PI) / 180.0; - ex = (x + (int)(radius * cos(t))); - ey = (y + (int)(radius * sin(t))); - - error = xos_plot(os_MOVE_TO, x, y); /* move to centre */ - if (error) { - LOG("xos_plot: 0x%x: %s", error->errnum, error->errmess); - return false; - } - - error = xos_plot(os_MOVE_TO, sx, sy); /* move to start */ - if (error) { - LOG("xos_plot: 0x%x: %s", error->errnum, error->errmess); - return false; - } - - error = xos_plot(os_PLOT_ARC | os_PLOT_TO, ex, ey); /* arc to end */ - if (error) { - LOG("xos_plot: 0x%x: %s", error->errnum, error->errmess); - return false; + ro_plot_origin_y - y * 2)) { + return NSERROR_INVALID; } - - return true; + return NSERROR_OK; } - -bool ro_plot_bitmap(int x, int y, int width, int height, - struct bitmap *bitmap, colour bg, - bitmap_flags_t flags) -{ - const uint8_t *buffer; - - buffer = riscos_bitmap_get_buffer(bitmap); - if (!buffer) { - LOG("bitmap_get_buffer failed"); - return false; - } - - return image_redraw(bitmap->sprite_area, - ro_plot_origin_x + x * 2, - ro_plot_origin_y - y * 2, - width, height, - bitmap->width, - bitmap->height, - bg, - flags & BITMAPF_REPEAT_X, flags & BITMAPF_REPEAT_Y, - flags & BITMAPF_REPEAT_X || flags & BITMAPF_REPEAT_Y, - riscos_bitmap_get_opaque(bitmap) ? IMAGE_PLOT_TINCT_OPAQUE : - IMAGE_PLOT_TINCT_ALPHA); -} +/** + * RISC OS plotter operation table + */ +const struct plotter_table ro_plotters = { + .rectangle = ro_plot_rectangle, + .line = ro_plot_line, + .polygon = ro_plot_polygon, + .clip = ro_plot_clip, + .text = ro_plot_text, + .disc = ro_plot_disc, + .arc = ro_plot_arc, + .bitmap = ro_plot_bitmap, + .path = ro_plot_path, + .option_knockout = true, +}; |