r15849 by christoph - updated colors1.html based on feedback from Jon Cruz
scribus-commit
scribus-commit at lists.scribus.net
Sun Nov 14 06:24:19 CET 2010
Author: christoph
Date: Sun Nov 14 05:24:19 2010
New Revision: 15849
URL: http://scribus.info/websvn/listing.php?repname=Scribus&sc=1&rev=15849
Log:
updated colors1.html based on feedback from Jon Cruz
Modified:
trunk/Scribus/doc/en/color1.html
Modified: trunk/Scribus/doc/en/color1.html
URL: http://scribus.info/websvn/diff.php?repname=Scribus&rev=15849&path=/trunk/Scribus/doc/en/color1.html
==============================================================================
--- trunk/Scribus/doc/en/color1.html (original)
+++ trunk/Scribus/doc/en/color1.html Sun Nov 14 05:24:19 2010
@@ -14,11 +14,11 @@
</table>
<p>Within Scribus there are several methods to create, import and edit solid colors and color sets. Moreover, Scribus has a well developed tool, the Color Wheel plug-in, which helps with creating color harmonies and even testing them for people with color blindness.</p>
<h3>Why Color Sets?</h3>
-<p>The answer to the question in the headline is closely related to the answer to a more basic question, namely: “What is a color?” The truth is, there is no simple answer to that question, as a “color” can be described in hundreds of ways, for example as a wavelength, a combination of color values within a certain “color space”, as a category in a framework based on aesthetical rules etc. As a result, many different so-called “color models” have been developed over the course of time, many of which have become part of a discipline called “color science”, a science that is itself a “meta-science”, as it requires input from many different disciplines, including physics, neuro-science, biology, mathematics, engineering, and even art, artisanry or literature. “Color” is actually one of a few cases, in which artists like Johann Wolfgang von Goethe or Albert Henry Munsell contributed significantly to scientific progress.</p>
+<p>The answer to the question in the headline is closely related to the answer to a more basic question, namely: “What is a color?” The truth is, there is no simple answer to that question, as a “color” can be described in hundreds of ways, for example as a combination of wavelengths, a combination of color values within a certain “color model”, as a category in a framework based on aesthetical rules etc. As a result, many different so-called “color models” have been developed over the course of time, many of which have become part of a discipline called “color science”, a science that is itself a “meta-science”, as it requires input from many different disciplines, including physics, neuro-science, biology, mathematics, engineering, and even art, artisanry or literature. “Color” is actually one of a few cases, in which artists like Johann Wolfgang von Goethe or Albert Henry Munsell contributed significantly to scientific progress.</p>
<p>Users of graphics-related programs like Scribus shouldn’t be required to learn the ins and outs of color science, although some theoretical knowledge doesn’t hurt. On a more basic level, however, some awareness of the issues mentioned above certainly helps a lot when working with colors, and the caricature below may be a first step to understand what it’s all about:</p>
<table width="100%"><tr><td align="center"><img src="images/colrs-caricature.png" title="Color Names – Courtesy of http://www.thedoghousediaries.com" alt="Color Names – Courtesy of http://www.thedoghousediaries.com" /></td></tr></table><br>
-<p>As is often true with good caricatures, there is some relevant truth behind it, in that there are different levels of differentiating and categorizing colors, which are often highly subjective. Imagine two persons, one in the “Girls” column, the other in the “Boys” column, talking on the phone about a color choice for a project – it will be virtually impossible, since both the (subjective) color names and the color perception are quite different. Thus, pre-defined color sets are actually a way to <b><i>communicate</i></b> about colors without referring to either a subjective color model or sophisticated color science, and using meaningful names for colors within a given color set can facilitate communication about colors even further.</p>
+<p>As is often true with good cartoons, there is some relevant truth behind it, in that there are different levels of differentiating and categorizing colors, which are often highly subjective. Imagine two persons, one in the “Girls” column, the other in the “Boys” column, talking on the phone about a color choice for a project – it will be virtually impossible, since both the (subjective) color names and the color perception are quite different. Thus, pre-defined color sets are actually a way to <b><i>communicate</i></b> about colors without referring to either a subjective color model or sophisticated color science, and using meaningful names for colors within a given color set can facilitate communication about colors even further.</p>
<p>Creating color sets also helps vendors or projects to define a limited set of colors that are allowed for use, which helps to maintain visual uniformity across publications</p>
<p>As a practical matter, the colors available in a color palette or colors you create yourself (and thus add to an existing palette) are the only ones that can be used as text, fill, line or gradient colors.</p>
@@ -42,17 +42,17 @@
<tr valign=top>
<td><img src="images/rgb.png"></td>
<td> </td>
- <td><b>RGB Colors</b>: These colours are defined in the RGB color space. Every color is described by the three primary colors red, green and blue.</td>
+ <td><b>RGB Colors</b>: These colours are defined in the RGB color model. Every color is described by the three primary colors red, green and blue.</td>
</tr>
<tr valign=top>
<td><img src="images/cmyk.png" align="top"></td>
<td></td>
- <td><b>CMYK Colors</b>: These colors are defined in the CMYK color space. Every color is described by the four ink colors used in color printing: Cyan, Magenta, Yellow and Key (=Black).</td>
+ <td><b>CMYK Colors</b>: These colors are defined in the CMYK color model. Every color is described by the four ink colors used in color printing: Cyan, Magenta, Yellow and Key (=Black).</td>
</tr>
<tr valign=top>
<td><img src="images/spot.png"></td>
<td></td>
- <td><b>Spot Colors</b>: These are also referred to as “named colors”, but since other (RGB/CMYK) colors can also have a name, the term “spot color” is to be preferred for unambiguousness. While a spot color can be either defined in the RGB or CMYK color space, its main purpose is to be stored with its <i>name</i> in a PDF or PostScript file (hence the term “named colorâ€). The name does refer to a real world color reference, like a printed color fan, and a printing company can mix or buy a special ink, which will match exactly the color as specified by the reference. Each spot color requires a separate printing plate, which is why you should use spot colors carefully, because their use makes a printing process more expensive. Typical use cases for spot colors would be very specific hues in corporate logos. The red dot beside a color space icon (RGB or CMYK) indicates that the respective color is a spot color.</td>
+ <td><b>Spot Colors</b>: These are also referred to as “named colors”, but since other (RGB/CMYK) colors can also have a name, the term “spot color” is to be preferred for unambiguousness. While a spot color can be either defined in the RGB or CMYK color model, its main purpose is to be stored with its <i>name</i> in a PDF or PostScript file (hence the term “named colorâ€). The name does refer to a real world color reference, like a printed color fan, and a printing company can mix or buy a special ink, which will match exactly the color as specified by the reference. Each spot color requires a separate printing plate, which is why you should use spot colors carefully, because their use makes a printing process more expensive. Typical use cases for spot colors would be very specific hues in corporate logos. The red dot beside a color model icon (RGB or CMYK) indicates that the respective color is a spot color.</td>
</tr>
<tr valign=top>
<td><img src="images/register.png"></td>
@@ -63,23 +63,23 @@
<tr valign=top>
<td><img src="images/alert.png"></td>
<td></td>
- <td>If you are working with activated <a href="cms.html">color management</a>, some or even all colors in a palette may be “out of gamut,” i.e., depending on a selected ICC profile, a color can’t be “translated” from one color space into another and a color shift can occur. In such a case you will see a warning sign placed beside the color in the list.</td>
+ <td>If you are working with activated <a href="cms.html">color management</a>, some or even all colors in a palette may be “out of gamut,” i.e., depending on a selected ICC profile, a color can’t be “translated” from one color model into another, and a color shift can occur. In such a case you will see a warning sign placed beside the color in the list.</td>
<td></td>
</tr>
</tbody>
</table>
<br>
<h4>Editing Colors and Color Palettes</h4>
-<p>When you create and save a new document, all the colors that are availabe in the dialog <i>Edit > Colors</i> will be stored in that document. This is an important detail, because any changes to a color palette will only affect your the current document. The selection or creation of a new default palette will be described in the <a href="color2.html">next section</a>.</p>
+<p>When you create and save a new document, all the colors that are availabe in the dialog <i>Edit > Colors</i> will be stored in that document. This is an important detail, because any changes to a color palette will only affect the current document. The selection or creation of a new default palette will be described in the <a href="color2.html">next section</a>.</p>
<p>If you choose <i>Edit > Colors</i> from the menu bar for the first time and with a new document open, Scribus will bring up the following dialog:</p><br>
<table width="100%"><tr><td align="center"><img src="images/editcols1.png"/></td></tr></table><br>
-<p>To the left you see the list of colors in the selected default color set, which is the palette “Scribus Basic”. The list view contains a preview of every color, a color space indicator, indicators for special colors (spot, registration), and finally the name of the color. If color management is active, you may also see a warning sign between the color preview and the color space icon, indicating that a color is out of gamut.</p>
+<p>To the left you see the list of colors in the selected default color set, which is the palette “Scribus Basic”. The list view contains a preview of every color, a color model indicator, indicators for special colors (spot, registration), and finally the name of the color. If color management is active, you may also see a warning sign between the color preview and the color model icon, indicating that a color is out of gamut.</p>
<p>To the right you see various editing options for your color palette, starting with the “Import” button at the top. Clicking on it brings up a file dialog, where you can select various sources for colors. These sources can either be existing Scribus files or color palettes in one of the following formats: <b>Encapsulated PostScript (EPS)</b>, <b>PostScript (PS)</b>, <b>Adobe Illustrator (AI)</b>, <b>OpenDocument Color Palettes (SOC)</b> or <b>GIMP Color Palettes (GPL)</b>. Note that importing a color palette does <i><b>not</b></i> replace the existing colors. Instead, the colors will be <i><b>added</b></i> to the existing palette:</p>
<table width="100%"><tr><td align="center"><img src="images/editcols1a.png"/></td></tr></table><br>
<p>You can also create a new color yourself and add it to the existing palette by clicking on the “New” button. This will bring up the color editor:</p>
<table width="100%"><tr><td align="center"><img src="images/editcols2.png"/></td></tr></table><br>
-<p>Here you can insert a name for the new color and select a color space (CMYK, RGB and web-safe RGB, the latter being almost irrelevant today, even if you are creating a PDF for the world-wide web). In the lower right section you see three or four (depending on the selected color space) color sliders to modify the color values. Of course you can also insert numerical color values directly. At the top of the dialog you see a so-called “HSV Color Map”, which allows for creating a color by clicking somewhere on the colored field. “HSV” is an abbreviation for “Hue, Saturation, Value”, which is another way to describe colors in the RGB color space. If you click on the drop-down list, you will see that you can also select a color from one of the installed color palettes.</p>
+<p>Here you can insert a name for the new color and select a color model (CMYK, RGB and web-safe RGB, the latter being almost irrelevant today, even if you are creating a PDF for the world-wide web). In the lower right section you see three or four (depending on the selected color model) color sliders to modify the color values. Of course you can also insert numerical color values directly. At the top of the dialog you see a so-called “HSV Color Map”, which allows for creating a color by clicking somewhere on the colored field. “HSV” is an abbreviation for “Hue, Saturation, Value”, which is another way to describe colors in the RGB color model. If you click on the drop-down list, you will see that you can also select a color from one of the installed color palettes.</p>
<p>To use the “Edit” and “Duplicate” options you have to select a color from the list. The dialog that will appear is identical to the one for new colors.</p>
<p>Deleting a color from the list can be risky, since the color may have already been applied to an item or text in a document. Thus, Scribus will always ask for a replacement color, a mechanism that’s similar to <i>Edit > Replace Colors</i>, which is described in the section on <a href="importhints2.html">importing vector drawings</a>:</p><br>
<table width="100%"><tr><td align="center"><img src="images/editcols3.png"/></td></tr></table><br>
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